

These things are usually buried somewhere in the small print, and it might even have been in some “hey, look at this exciting new prek we git you” email from your employer when you/they joined the scheme. It might have been something like “Any items we provide to assist with member’s physical therapy remain the property of <evilcorp> at all times, and must be returned at the end of the therapy”.
Just treat the tablet as what it was provided as, a way to access their app, and be ready to return it afterwards.
He was forgetting the most important step: you have to nail their feet to the floor before you light them up.