FIDO/U2F security keys
fido* at uhidev?
fido driver provides support for
FIDO/U2F-compatible USB security keys. They are Human Interface Devices
(HID) which can be accessed via the /dev/fido/N
The driver is compatible with the read(2), write(2), and ioctl(2) operations of the generic uhid(4) device but only accepts the optional HID ioctl(2) calls from root.
uhid(4), uhidev(4), usb(4)
fido driver first appeared in