My hubby uses a tablet, and there is no info on it as to banking or address, etc. He can go on. I made sure when I bought and set it up for him. Is there a way you can go on YouTube, do searches, send emails and text - but except for his email, there is nothing else on his tablet. He does not have a credit card, and he has a $100 limit on his cash card. He had his driver's licence taken away years ago, as he is also legally blind. So if you can get someone to clean his computer of any identifying information, it would be safe for him to continue.
He still drives his electric mobility scooter; he shouldn't, but he is adamant about keeping it. It is his last bit of independence.