restrict enrolled students from sharing their account from my website's courses (by device serial number)

Purpose: restrict enrolled students from sharing their account from my website's courses Method: restrict by device serial number Source: my website's courses, which was built in wordpress, server in hostinger. Program language: any kind. It should be done in a convenient way for user, and cover all the potential risk. So I suggest more details: 1, It should group all the lessons I choose to restrict device number, and automatically apply to all the device number that I choose. For the lessons and pages I don't choose to restrict, it's should be viewable for anyone. 2, There should be something to show my enrolled student device serial numbers, in a list. And click in each student account to show all the device numbers that student uses to view my courses. You could make a page to redirect all unallowed device, then get their device number there. 3, your work should have a button to turn on and turn off it, when I need. If any detail cannot be done, it's ok, just tell me that.