[To that, Till shakes his head. Sure, he never had access to methods of burning or destroying it (and even if he had, he was under such constant surveillance that even attempting such would have gotten him in serious trouble, so it's just not something that's ever crossed his mind. The thought of trying to forcibly pry it off isn't a nice one either, knowing that it could easily backfire while he's still wearing it.]

You don't understand. Someone with fingers has to get it off. There's a latch in the back...some kind of lock. I just can't take it off.

[Not just because he has paws now, but because it's designed so that he can't. Only someone else can get it off for him.]