The X201, addendum

The fingerprint reader

The fingerprint reader is a mess. It has the USB id (147e:2016) of the upeksonly driver in the fprint project, but it doesn’t work. The reader seems to work with the normal UPEK driver (either in thinkfinger or fprint) by modifying the supported USB id. But the answers it presents to the driver don’t seem to conform to anything it knows.