FWIW: Concurrent with the arrival of Surface Pro 4 last year, Microsoft released a Surface keyboard that included a fingerprint reader that could be used with S

FWIW: Concurrent with the arrival of Surface Pro 4 last year, Microsoft released a Surface keyboard that included a fingerprint reader that could be used with Surface Pro 3 devices. This was done as a token gesture to Pro 3 users since the Pro 3 does not include the necessary IR camera for Windows Hello face recognition. The IR camera is only on the Pro 4 and Surface Book.