Is water proofing really a bigger deal than the 3.5mm audio jack? Subjectively, I use the jack nearly every day, and have not dropped a phone into a toilet even once.
Assuming it is ever right to cage a human as punishment, i guess one would need a special room on the exterior wall of the prison.
Inside the room (and prison?) both are unencumbered (the free one is just visiting for the twins sake), but in order to leave (as one has the right to) the other must don one of those shrouds from the Foundation series.