His company works a lot with school doing live events but, due to the virus situation, he wants to move everything online.
His goal would be to set up an e-learning platform where he can upload all his educational videos and teacher can then buy them to show their classrooms.
However he wants them to access the files only once. Basically, after the purchase has been made the teacher will receive a code (or a link) to access the video and other material. After everything has been watched, they won’t be able to access it unless they buy it again.