He said he squandered several of his early lectures trying to convince the app he was present, toggling his settings in desperation as professors needled him to put the phone away. He then had to defend himself to campus staff members, who believed the data more than him.""
This is downside of tech, false positive and negatives
Also, couldn't you just buy a cheap burner phone and hand it to a friend to take to class for you? Just because the phone is there doesn't mean the person is.