One of the less-discussed features in the latest iPhone software update concerns Apple's ability to "lock" a phone's components so they cannot be used in other devices.
This means that the battery, display, and camera, for example, are tied to the user's Apple account and cannot be used in devices linked to a different Apple account without first being unlocked.
This lock ensures that a stolen iPhone cannot be used even for spare parts. Stealing Apple devices is already unattractive because they are well-secured, and this move reduces the incentive to steal them even further.