Jacek Fedoryński posts about providing “PlayStation controller authentication as a service”:
It applies to PS4 controllers, but is mostly useful in PS5 context, because officially licensed specialty peripherals (arcade sticks, steering wheels) work with certain PS5 games.
There are two components: a Raspberry Pi Pico W that is connected to a PS5 and works as a controller and a network server running on a computer with a licensed PS4 controller connected to it. When the PlayStation issues an authentication challenge to the Pico, it forwards it over the network to the computer with the real controller connected, the computer asks the controller for a response and then forwards it back to the Pico connected to a PS5.
Why would it be useful at all? With this architecture, it would be possible for one licensed controller to act as an authentication backend for multiple controllers at the same time.
The Raspberry Pi Pico runs a C program while the authentication on the computer uses Python.
See more on GitHub.
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