Actually no big deal
The iPhone already has some of this stuff built in, there's a water detector at the far end of the jack socket, and many consumer devices have had mechanical 'spyware' built in for decades. I used to work in tech support for a major electrical in the 70s, there were obvious and hidden seals that would be broken by attempts to open cases, strange headed screws and spring loaded screws that you couldn't put back in again, and a small device that would tell you how many hours operation the device had been used for - useful for detecting if domestic equipment was used to death in a commercial enviroment - for example a CD player.


