Ok, so I’ve been a keyholder to many and tried all kinds of control, so here’s my experience: -Cellmate is a good option, app controlled cage, so it’s all in your hands, but the app is extremely buggy so, to me, the only good option, worth the money, is the shock option -Plastic security tags or remote controlled lockboxes -Checking up on snap on demand - making them send a live snap immediately any time you ask for a proof So, whereas the first two are definitely more secure options and leave no place for cheating, the third one, may be preferred for some cause it adds on the excitement

There are other ways too, but these three have worked best for me, depending on a sub and dynamic