[shock]

My Dell Latitude's fingerprint sensor worked under Ubuntu in 2014.

[bubblethink]

Old fingerprint readers were reversed. Newer stuff is more tightly locked down. People have reversed the communication protocol, but various other bits are harder to get around due to signatures or other DRM like mechanisms.

[NikolaeVarius]

Not sure how this is relevant to a discussion about Lenovo laptops

[jasonlotito]

XPSs are Dell.