It&#x27;s been covered a couple of times, but Apple is being asked to make a tool that would check that the device ID is the same as the warranted device. That&#x27;s the essential part.<p>By having a device ID check (combined with digital signage), Apple <i>could</i> publicly release the tool without fear of anything happening on any other phone. Plus people couldn&#x27;t modify it because that would break the signature.