The Librarian of Congress and US Copyright Office just proposed new rules that will give consumers and independent repair experts wide latitude to legally hack embedded software on their devices in order to repair or maintain them. This exemption to copyright law will apply to smartphones, tractors, cars, smart home appliances, and many other devices.

The move is a landmark win for the “right to repair” movement; essentially, the federal government has ruled that consumers and repair professionals have the right to legally hack the firmware of “lawfully acquired” devices for the “maintenance” and “repair” of that device. Previously, it was legal to hack tractor firmware for the purposes of repair; it is now legal to hack many consumer electronics.

Specifically, it allows breaking digital rights management (DRM) and embedded software locks for “the maintenance of a device or system … in order to make it work in accordance with its original specifications” or for “the repair of a device or system … to a state of working in accordance with its original specifications.”

The Digital Millennium Copyright Act (DMCA) has always been a horrible law, but no where is it worse in cases where it allows manufacturers to lock people out from repairing items that they bought and paid for.