Small repair shops and tech enthusiasts who attempt to fix their new Apple devices may be taking a serious risk in doing so. According to a report from The Verge, Apple confirmed that its new T2 security chip is designed to lock down devices after repair if it doesn't recognize certain authorized replacement parts.

Word of this new policy came out last month in an Apple document circulated among authorized service providers. In order to replace certain hardware components, such as the Touch ID sensor or the logic board on new Macs, the provider must run a specific piece of diagnostic software.

This program, called "AST 2 System Configuration," works in conjunction with the T2 security chip. If this step isn't performed on devices with the T2 chip, it could result in an inoperable machine.

"For Macs with the Apple T2 chip, the repair process is not complete for certain parts replacements until the AST 2 System Configuration suite has been run. Failure to perform this step will result in an inoperative system and an incomplete repair," the internal document stated, according to a report by MacRumors.

Apple only provides the special application to its own stores and authorized service providers. That means that unauthorized service providers, small repair shops, and individuals can't completely and properly replace certain parts of new Macs.

Apple didn't provide a reason for this new policy, nor did it provide a detailed list of repairs that would be affected by this policy. The company may want to ensure its authorized service providers are using the proper repair components and following procedure. However, Apple may also want more control over Mac repairs as a whole in terms of the parts used, the procedures run, and the price charged for such repairs.

Apple introduced the T2 security chip when it debuted the iMac Pro last year. It essentially acts as a system controller in new Macs, controlling the mic, speakers, cooling system, and the SSD. Not only does it facilitate a secure boot feature and play a role in encrypting storage, but it also acts as a bridge between some hardware components. Finally, it also allows Apple to streamline its bill of materials so it can rely less on third-party manufacturers.