You'd probably want the sensor pack to be separable from the phone case, so you can buy a new phone (whose shape changes every year, forcing new accessory purch

You'd probably want the sensor pack to be separable from the phone case, so you can buy a new phone (whose shape changes every year, forcing new accessory purchases). I do think it's simultaneously cool and ridiculous that instead of just adding a simple distance sensor, companies making measurement software for phones double down on the software-only approach with computer vision.