I’ve modded an old iPad 2 (not the Air 2) and put it inside the wall (It’s actually a really large hatch, the back of the wall is accessible).
Used an esp 8266 with Homeyduino to wake up the screen with homey (based on a motion sensor) when someone is in the room. A simpler solution is to do this wireless with Bluetooth (But the iPad 2 ios 9 does not support BLE, so I couldn’t use it for that).
Made a tutorial for Bluetooth solution:
https://community.homey.app/t/homey-esp32-bluetooth-keyboard-firmware-can-lock-unlock-ipad-remotely-dev-review-needed
