For scammers and spam calls at least yeah. If this isn't monitored, someone can just make a device that connects to the phone and makes calls automatically. We already have credit card skimmers. If nobody checks on these phones routinely, I foresee a lot of bugged phones in the future.

Stalkers and scammers too. I can't even imagine the fallout this might have. Either it has to have heavy surveillance with zero privacy or this could just be the perfect tool for the wrong person.