Web development sri lanka kandy jobs
I'm seeking a skilled programmer to help develop an intera...mobile game. The primary focus of this project is on creating an engaging and entertaining AR web application. The ideal freelancer for this project should have: - Extensive experience in AR programming and web application development. - A portfolio of previous interactive game projects, preferably in AR. - Strong skills in mobile platform development. - A deep understanding of user experience design for games. This project will involve: - Designing and implementing interactive AR game elements. - Ensuring the application is optimised for mobile use. - Creating an engaging and entertaining user experience. If you have the necessary skills and experience in AR programming and mobile game deve...
We're a new business seeking a skilled developer to build a cross-platform (iOS and Android) online...users to create and manage their profiles. - Shopping Cart and Checkout: A seamless shopping experience is essential, with an easy-to-navigate cart and checkout process. - Product Search and Filtering: Users should be able to easily search for products and filter results based on their preferences. Ideal Skills and Experience: - Proficient in cross-platform mobile app development. - Experience with e-commerce app development is a plus. - Capable of working with preliminary design ideas and providing professional input. - Strong understanding of user authentication systems, shopping cart functionalities and product search features. - Excellent communication skills for ef...
I'm in need of a professional mobile app developer with experience in creating utility tools for both iOS and Android platforms. Key Requirements: - Expertise in cross-platform mobile app development - Previous experience in developing utility/tool mobile apps - Proficiency in both iOS and Android development - Ability to understand and implement user-friendly design and functionalities Please include any relevant samples of your previous work in your proposal.
I'm looking for a skilled Android developer to help me create a ride-hailing app similar to UBER or Ola. Core Functionality: - The app will primarily focu...real-time. - In-app payments: The app should facilitate secure, easy in-app transactions. - Rating and feedback system: After each ride, users should be able to rate their experience and provide feedback. Target Users: - The app will cater to both individual riders and businesses needing transport services. Ideal Skills and Experience: - Project based on java - Strong expertise in Android app development. - Previous experience in creating ride-hailing apps is a significant plus. - Proficiency in integrating real-time tracking systems and secure payment gateways. - Ability to design user-friendly interfaces and implement ...
Project Overview: Develop a mobile fantasy game platform where users can play skill-based games like chess, ludo, and similar games of chance. The app will include real-money gameplay where users can deposit money, compete, and win. The platform will retain 30% of the winnings as a service fee. Key Features: Games Included: Skill-based games like chess and ludo. Chance-based games (ensuring compliance with Indian betting laws). Real-Money Integration: Secure payment gateways for deposits and withdrawals. Transparent tracking of earnings and service fees. Premium Design: Eye-catching UI/UX with smooth navigation and modern aesthetics. Interactive animations, themes, and intuitive layouts. Legal Compliance: Ensure the platform abides by all Indian laws related to betting and skill-based ga...
Power BI Model Development for Financial Reports
I'm seeking a skilled developer to create a dynamic quiz platform using Angular and Spring Boot. This application should integrate user-friendly features and an interactive gaming experience. Key Features: - Social Media Registratio...Language Learning Assistant: This feature should assist users in their language learning journey. - Real-time Engagement: Utilize the Gimini API for real-time question generation and responses to enhance user engagement. The ideal candidate will have extensive experience with Angular and Spring Boot, and a good understanding of API integration. Experience in developing interactive and user-friendly web applications will be highly beneficial. Please provide examples of similar projects you've worked on. Quality and timely delivery is essenti...
I'm looking for a professional web developer to create a complete, modern and minimalist portfolio website for our company. Our current website is , and we want to improve it significantly. Key requirements: - The new site should include an 'About Us' section, a 'Portfolio Gallery', and 'Contact Information'. - The overall design theme should be modern and minimalist, focusing on clean lines and a simple aesthetic. Ideal candidates will have: - Extensive experience in web development, particularly for portfolio sites. - A strong understanding of modern minimalist design principles. - Proven ability to deliver high-quality work on time. go to to see
am working on writing a PY code to achieve following outcome and need finishing the code. Lets work on this in different parts. Before we start here is the summary of what we are trying to achieve. I am building a trading system that generates a list of stock options we need to enter on a given day and take trade at 9:15 with a predefined risk of 10% and risk to reward of 1:8. To achieve this we need to break down the process in to three major sections. Identify the stock to enter in to. Prepare and take trade on all opportunities. Manage trades and take profit on open trades. In this sequence of steps I have been able to solve part and need assistance in part 2 and 3. We will use the Dhan broker’s API to execute and manage trades and here is the there documentation link If you ...
I'm in need of a proficient developer or a team with extensive e-commerce experience to construct two u...challenges, and leaderboards - Sustainability-focused options including carbon footprint tracking, eco-friendly product incentives, and consolidated shipping - A broad range of product availability, encompassing everything from groceries to electronics. Please note: - The project is strictly for website development with no brand mention. - All advanced features on the second website are of equal priority. Skills and Experience Required: - Extensive experience in e-commerce website development - Proficiency in AI and gamification integration - Knowledge of sustainable e-commerce practices - Strong understanding of customer review systems - Expertise in logistics man...
I'm looking for a skilled web developer who can create a professional and visually appealing portfolio site for my graphic design work. Key Features: - Using Wordpress for a simple but well designed page including graphic/photo content for my business. - Client Testimonials: I want to include some positive feedback from my clients to build credibility. - Contact Form: Essential for potential clients or collaborators to reach out to me. Skills and Experience Required: - Proficiency in web development and design principles. - Previous experience creating portfolio sites. - Ability to integrate interactive features like an image carousel, booking form and payment system for classes. - Skills in implementing user-friendly contact forms and displaying testimonials i...
I'm seeking a skilled web developer with expertise in HTML and CSS to create a modern, minimalistic homepage for me(I've figma design) . Key Requirements: - Proficient in HTML and CSS - Experience in developing websites - Ability to create a modern and minimalistic design Please include examples of your previous work, specifically any related to modern design. A keen eye for detail and a strong understanding of user experience and functionality is essential for this project.
I'm looking to build an E-commerce website to sell physical products. The site should be user-friendly, secure, and able to handle a variety of products. Key Requirements: - Expertise in e-commerce website development - Knowledge of secure payment gateways - Experience with designing user-friendly interfaces - Understanding of SEO and digital marketing strategies The website should include: - A shopping cart feature - An option for 'Pay on Delivery' - A responsive design suitable for both desktop and mobile users Potential freelancers should have a strong portfolio of similar projects and be able to provide references.
I am looking for a skilled web developer with proven experience in creating e-commerce websites, specifically on the Wix platform. The website is intended for online retail and should have a professional, user-friendly interface. Key Requirements: - Expertise in Wix and e-commerce site development - Knowledge in integrating secure payment gateways - Ability to design engaging and intuitive layouts - Strong problem-solving skills and attention to detail The primary focus for the developer will be to incorporate a reliable payment gateway into the site, ensuring seamless and secure transactions for customers. If you have a portfolio of past e-commerce projects on Wix, that would be highly beneficial.
I'm in need of a skilled developer to create a plugin for UISP CRM that interfaces with the Billingo billing system. The Billingo API will be utilized for this task. The plugin must meet the following specifications: - Generate invoices in Billingo based on those created in UISP, with the appropriate tax settings. - Download Billingo invoices via its API directly into UISP CRM, accessible from both the customer portal and the backend. - Void invoices in Billingo when they are voided in UISP CRM. The ideal candidate will have extensive experience with PHP, the current stable release of UISP CRM, and the Billingo API. Familiarity with the UISP building blocks is a must. As user authentication between UISP CRM and Billingo is conducted via an API Key, the developer must be adept at imp...
We are looking for a committed professional to design and implement a comprehensive system for an NGO, aimed at collecting, storing, processing, analyzing, and presenting data on targeted and potential beneficiaries across the nation. The ideal candidate will have deep expertise in social protection program design, a strong grasp of implementation frameworks, and a solid background in research and analysis. If you possess a Master’s degree in Social Protection, Public Policy, or a related field, have at least five years of relevant experience, and are driven by the opportunity to create meaningful impact, we want to hear from you! Key Areas of Data: - Demographic Data: We need to gather information on age and gender, education level, and household size. - Economic Data: This include...
I'm in need of a skilled WordPress developer to create a comprehensive agency portfolio site. The site should encompass: - A 'Service showcase' section detailing our offerings - A 'Contact Form' for potential clients and inquiries - A Home page that encapsulates our agency - A section for Certifications - A Blog space for updates and industry insights - A 'Products Description' area - A 'Become Supplier' page - A 'Career' section for job opportunities This project requires a deep understanding of WordPress and its portfolio capabilities. Experience with creating agency-focused sites is a plus. The ideal freelancer should also have a knack for design, ensuring the site is visually appealing as well as functional.
I need a developer to enhance the Interactive 3D Mall Map demo by adding a wayfinding feature. We have all of the source code of existing software, we need you just to adding way finding feature. Requirements: Fixed starting position: Define a static user location (e.g., entrance). Destination-based navigation: Generate a clear path from the starting point to any selected destination eith clear animation. Also we need to have escalator and elevators. Seamless integration: Ensure the wayfinding feature blends smoothly with the existing map functionality.
I'm seeking an experienced Woocommerce developer to enhance my online store with local payment solution Payplus and some custom functionalities. Key tasks include: - Integrating Payplus as the primary p...and some custom functionalities. Key tasks include: - Integrating Payplus as the primary payment gateway. - Implementing a package splitting feature at checkout based on the number of items in the cart. - Customizing product pages to improve user experience and engagement. Ideal candidates should have: - Proven experience in Woocommerce development. - Prior work integrating Payplus or similar local payment solutions. - Strong skills in front-end development for product page customization. - Ability to understand and implement custom rule-based solutions. Looking...
I'm seeking a professional web developer to create an adult video sharing website. This platform should allow users to upload their own content, with all submissions requiring admin approval prior to going live. It's vital that the site is secure, user-friendly, and compliant with relevant regulations. Key features and skills required: - Video content hosting and streaming - User-upload functionality with admin moderation - Robust security measures - Experience with adult content sites (preferred but not mandatory) - Web development and design expertise A comprehensive understanding of subscription management systems and a comments and ratings feature would be a plus, although these are not required for the initial phase of the project.
We are seeking an experienced and dynamic Business Development Specialist to help expand our footprint in Canada. Our company specializes in IT solutions, warehouse design, automation technologies, and project management services. The ideal candidate will identify growth opportunities, build relationships with potential clients, and develop strategies to position our offerings as leading solutions in the industry. Key Responsibilities: - Identify growth opportunities within IT sector, Warehouse and logistics, and Automation industries - Build relationships with potential clients - Develop market positioning strategies for our offerings - Analyze market trends, competitor activities, and customer needs to recommend effective strategies. - Work closely with project managers and techn...
I'm looking to develop a 56,600 square foot piece of land into a fully equipped warehouse and weighbridge facility. This project should include: - Construction of gravel roads leading to and within the site. - Installat...equipped warehouse and weighbridge facility. This project should include: - Construction of gravel roads leading to and within the site. - Installation of basic amenities such as Electricity and lighting, Water supply and sanitation. - Setting up a comprehensive Security system including Surveillance cameras and Alarm systems. The ideal candidate for this project should have experience in land development and construction. Knowledge in setting up security systems and basic amenities is a plus. Please include examples of similar projects you've complet...
I'm looking for a web developer who can create a platform where tutors can connect with students. The website should feature: - User Roles: There will be three user roles - Tutors, Students, and Admins. - Functionalities: Tutors will manage content, Students will access materials, and Admins will oversee the platform. - Payment System: The platform should support multiple payment methods including Credit/Debit Cards, PayPal, and Bank Transfers. -here, tutors can provide their own notes, accessible outside the servers (they can choose) or inside with the students. they will get paid either way through different subscription plans by students. - the AI bot is able to access chats (if allowed) and record meetings so that it can summarise everything that’s done. Students c...
I'm looking for a WordPress professional to create a blog/news site for me. Key Requirements: - Design a clean, user-friendly interface - ...user-friendly interface - Implement a robust commenting system - Integrate social media for easy sharing and following - Organize content using categories and tags - Ensure the design is fully responsive on all devices - Implement strategies to ensure fast loading times - Optimize the blog for search engines - Add strong security measures to protect the site Ideal Skills: - Proficient in WordPress development - Experience with blog and news site design - Strong understanding of UI/UX principles - Excellent skills in social media integration Please provide examples of your previous work in your bid. Please include the following feature...
We are looking for an experienced WordPress specialist who can develop a professional, custom-de...professional, custom-designed website for our business. We already have the design and the content. Key requirements: - A fully responsive and easy-to-navigate design. - Implementation of a secure and functional contact form. - Basic security features to protect against common threats. - Ensuring the site is compatible with all major browsers. Ideal skills: - Proficiency in WordPress development. - Strong understanding of web design principles. - Previous experience creating business-focused websites. - Ability to implement custom designs. - Knowledge of SEO and website security measures. Please provide examples of your previous work, particularly any custom WordPress design...
I need a professional web developer to create a portfolio website for our group of companies. This website will showcase our company's history and team profiles. Key requirements: - Comprehensive understanding of portfolio website design - Proven experience in creating visually appealing, user-friendly websites - Ability to integrate company history and team profiles into the site - SEO knowledge to enhance website visibility - Excellent communication skills for updates and revisions Please include examples of previous portfolio websites you've developed in your bid.
### ? **Project Title**: Build an E-commerce UI Similar to Kama Ayurveda in React and Node.js ### **Project Overview**: I am looking for an experienced freelance developer to build a sleek and modern e-commerce UI, similar to the design and functionality of [Kama Ayurveda](). The project will be built using **React** for the frontend and **Node.js** for the backend, ensuring a seamless and responsive user experience. ### **Key Requirements**: 1. **Frontend**: - Develop a responsive and visually appealing UI using **React**. - Implement components for product listings, product details, shopping cart, checkout, and user account pages. - Ensure smooth navigation and a user-friendly interface. 2. **Backend**: - Build a robust backend using **Node.js**. - Implement RESTful API...
Firmware development services and purchase of eeprom.
Proposal cost for development of the WordPress website based on the XD design.
I operate a non-profit organiza...are moving forward with using Dynamics 365 and the power platform to manage our operations. Long term we will be incorporating azure ai services. This project will specifically focus on phase one of this process. I have attached a google doc link with the requirements. We already have a Microsoft non-profit grant with appropriate licenses and an environment setup. I am fairly competent in development however I lack the time to do this project myself. We need it done asap. Successful work will likely result in additional projects being awarded. There is a very ambitious long term plan we hope to achieve. I will setup a trello board to manage deliverables.
We are seeking a skilled developer with proven experience in creating on-demand cannabis delivery apps similar to Weedmaps or Leafly and lauched it on Playstore and App Store. The ideal candidate should have: Strong expertise in developing delivery applications with user-friendly interfaces and robust functionality. - In-depth knowledge of POS systems like Treez, including their integration and operation. - A portfolio showcasing past developments in the cannabis delivery or similar industries. Responsibilities include building or enhancing our app, integrating Treez or METRC POS systems, and ensuring seamless functionality for both users and businesses. Please share your relevant experience, portfolio, and references. Applicants who can demonstrate similar past projects will be priorit...
I'm looking for a professional web developer with experience in Framer to create a business website for me. The primary goal of this site is to generate leads. Key Requirements: - The site should be designed with lead generation in mind, using effective strategies to capture potential clients. - A contact form needs to be integrated into the site, allowing interested visitors to reach out to us easily. Ideal candidates for this project should have: - Proven experience in developing business websites on Framer. - A strong understanding of lead generation strategies and web design. - Excellent communication skills to understand and implement my vision for the site.
I'm seeking a skilled developer to create a SaaS-based project management tool with a core focus on task management. client tester and developer owner grouping with anonimus data The tool should...core focus on task management. client tester and developer owner grouping with anonimus data The tool should support the following task management features: - Task Assignment: Ability to delegate tasks to team members - Progress Tracking: Monitor the progress of each task - Notifications and Reminders: Automatic alerts for due dates and updates The tool is intended for web use only. Therefore, expertise in web development and SaaS solutions is crucial. Experience in building project management tools will be highly advantageous. Please make sure you include relevant ...
I aim to build a business-oriented Android app dedicated to raising funds for...Donation Tracking: This will allow users to see real-time updates on the funds raised and where the money is being allocated. - Campaign Updates: Regular updates on the campaign's progress to keep users engaged and informed. - Volunteer Management: A system to manage volunteers who want to contribute their time and effort towards the cause. Ideal Skills and Experience: - Proficient in Android app development with a portfolio of successful business apps. - Prior experience in developing fundraising or NGO related apps would be a significant advantage. - Strong understanding of user account management systems and inventory tracking. I am looking for a dedicated professional who can turn this vision ...
I'm looking for a web developer with software expertise to create a website with a comprehensive fleet management system. My fleet consists solely of cars. Key Features: - Core functionality of a claim management system Please note that this is a unique requirement as it deviates from the typical GPS tracking, maintenance scheduling, or driver management features commonly found in fleet management software. Ideal Skills: - Proficient in web development and software creation - Experience in building fleet management systems - Ability to develop a specialized claim management system
I'm looking for a proficient Android developer to create a quick commerce mobile app for me. The app should be similar to Blinkit or Zepto, catering to ar...real-time. - Customer Order Tracking: An efficient order tracking system is essential. Customers should be able to see the status of their orders in real-time. - COD Instead of Payment Gateway: The app will not require a payment gateway. All transactions will be Cash on Delivery (COD). The app should seamlessly support this. Ideal candidates should have: - Extensive experience in Android app development - Previous work in eCommerce or quick commerce apps - Skills in implementing product management and order tracking systems - Knowledge in integrating COD systems into mobile apps Please include examples of your previous wo...
I'm in search of a personal development coach who specializes in enhancing emotional intelligence. The sessions need to be conducted online via video call. Key Requirements: - Expertise in personal development coaching, specifically emotional intelligence - Proven track record of helping clients improve their emotional intelligence - Highly skilled in conducting engaging and productive online coaching sessions - Excellent communication skills, with the ability to explain complex concepts in an understandable way Ideal Skills: - Strong background in psychology or related field - Experience with online teaching platforms - Certified life coach - Empathetic and patient personality - Ability to create a safe and supportive online environment
I am looking for mobile application (android & IOS) for my business with AI integration. Having extensive expertise developing mobile apps, particularly for the iOS and Android platforms, is one of the essential prerequisites. Proven proficiency in UI/UX design, as evidenced by a solid portfolio of prior work that highlights effective UI improvements. The capacity to plan, create, and execute captivating new features that enhance the app's use and functionality. A solid grasp of performance optimization is necessary to guarantee that the app functions properly after an upgrade. The ideal applicant will be passionate about developing user-friendly, intuitive interfaces and has a strong sense of design. Additionally, they will possess the capacity to think creatively and suggest ...
I need an e-commerce website. As I don't have much knowledge about e-commerce platforms, I am open to suggestions based on your expertise. The chosen platform should be user-friendly, reliable, and scalable. Ideal Skills and Experience: - Extensive experience in e-commerce website development - Proficiency in major e-commerce platforms such as Shopify, WooCommerce, and Magento - Strong understanding of user-friendly design - Ability to provide clear, simple explanations and recommendations
I'm seeking a Power BI expert to create a simple model from a small dummy dataset which will be provided. Need this completed as soon as possible. The model should generate reports for trial balance, cash flow, balance sheets, and P&L from a small dummy dataset in Excel which will be provided. Key Requirements: - Create visually appealing and informative reports using charts and tables. - Highlight specific metrics and KPIs, namely revenue growth, net income, and cash flow status. Ideal Skills and Experience: - Proficiency in Power BI, with a strong portfolio of similar projects. - Excellent understanding of financial metrics and reports. - Ability to create engaging visual elements.
I'm in need of a professional web developer who can create a sophisticated website for my business. The primary purpose of this website is to showcase our physical products. Key Responsibilities: - Design and develop a user-friendly website - Showcase our physical products in an appealing manner While I'm not certain about needing e-commerce functionality at this point, I would like the option to integrate it in the future. Therefore, the website should be designed with potential e-commerce scalability in mind. Ideal Skills: - Proficiency in web development languages (HTML, CSS, JavaScript, etc.) - Experience with e-commerce platforms and capabilities - Strong design skills with an eye for aesthetics - Knowledge of SEO best practices
I'm seeking a professional WordPress deve...effective website for selling an online course. The site will need to handle transactions via the Square payment gateway. Key Responsibilities: - Develop a user-friendly WordPress site focused on course sales - Implement Square as the primary payment gateway - Integrate various course materials, including videos, PDFs, and interactive quizzes Ideal Skills: - Proven experience in WordPress development, particularly for e-learning platforms - Familiarity with Square payment gateway integration - Ability to create engaging and interactive course content online The goal is to have a seamless, efficient website that supports the sale and delivery of a comprehensive online course. Please include relevant samples of your previous work in...
I'm in need of an affordable, skilled web developer to build my e-commerce website. Key features should include: - Product Listings: The site should be able to showcase a variety of products. Experience in designing attractive, user-friendly product pages will be beneficial. - Payment Gateway Integration: A secure and efficient payment system is crucial. Familiarity with various payment gateways and their integration processes will be highly valued. While I haven't specified a particular platform for this project, experience with popular e-commerce platforms such as Shopify, WooCommerce, or Magento will be a plus. The ideal candidate should be able to work within a budget while delivering quality work. Please provide examples of previous e-commerce sites you've d...
We are looking for a skilled web and mobile app development team to create a feature-rich real estate platform. The platform aims to provide users with an intuitive property search experience, advanced analytics, and value-added tools. This will include both a customer-facing platform and an admin portal Scope of Work: The platform will include: • Property Listings: Comprehensive details, images, and tags (e.g., affordable housing, eco-friendly). • Search Functionality: Filters, keyword search, and map/list view options. • Affordable Housing Section: Dedicated category with defined parameters. • Cost of Living Calculator: Custom tool to calculate monthly living costs by location. • Saved Searches and Alerts: Notifications for new listings and...
We are two young entrepreneurs from Austria, and we want to implement the following: In Austria, you have to pass a theoretical exam to obtain a driving license. However, the theoretical exam is very extensive and consists of around 1,500 questions. Many students don’t know how to study effectively for the theoretical exam, and they lack a concept that can help them. We have developed a learning concept that guarantees success for the students. Our Plan: We want to integrate these questions into our website. Our website is currently being developed by a colleague using WordPress. What we want to offer our students: Login and access to the questions: Students should be able to log in to our website with individual login credentials – whether on a PC, laptop, tablet, or mo...
Noted! If you're bidding for a project, ensure that you highlight your relevant experience in the share market or related projects. Unified Advanced Trading Platform (UATP) 1. Introduction UATP is an innovative trading platform integrating multi-broker API connections with advanced features for algorithmic, discretionary, and custom-script trading. By offering robust live execution capabilities, backtesting, forward testing, and paper testing, UATP delivers unparalleled functionality for retail and institutional traders alike. ________________________________________ 2. Features and Functionalities 2.1 Algo Trading 1. Backtest o Backtest years of historical data in seconds with comprehensive reports. o Advanced analytics, including win rates, risk-adjusted returns, and drawdowns. 2...
I am embarking on a project to create a new clothing line, Peking, and I am looking for a talented freelancer to assist with this. Casual and Formal Wear: The line will include a mix of casual and formal wear, so experience in designing or sourcing for these categories will be a plus. Diverse Clothing Items: The primary focus will be on shirts, pants, and dresses, but there may be opportunities to explore other items as well. Material Sourcing: The clothing will primarily be made from cotton, polyester, and wool. Knowledge of these materials and experience in sourcing quality fabrics will be essential. Ultimately, I am looking for someone who is committed and passionate about their work. I am more than happy to continue working with you as long as the work meets my standards and expect...
**Job Description:** We are seeking an experienced web developer or a team to build a robust, modern, and fully responsive tourism website using the MERN stack and Next.js. The project involves developing both the **front-end website** for tourism company and an **admin portal** for managing tours, activities, and other services. Should have experience in Travel APIs, like Viator, tripadvisor. ### **Project Requirements:** #### **1. Front-End Website:** - Fully responsive, user-friendly design with a modern and visually appealing layout. - SEO-optimized website to enhance search engine rankings and online visibility. - Integration of services like **tours, activities, yacht charters, and private jet bookings**. - A dedicated section for **customizable packages**: ...
I'm seeking an experienced application developer to create an engaging, real cash money mobile game, akin to casino games, rummy circle, or aviator. Key Features: - Player Authentication: The game must have a robust player...to create an engaging, real cash money mobile game, akin to casino games, rummy circle, or aviator. Key Features: - Player Authentication: The game must have a robust player verification system to ensure fair play and security. - Multiplayer Functionality: This game should allow multiple players to participate, making it competitive and exciting. Ideal Skills: - Proficiency in mobile game development for iOS and Android. - Prior experience in developing real cash money games. - Strong skills in implementing player authentication systems and multiplayer...