Finland, Canada, the US, and other countries are testing tech for passport-free travel, including facial recognition and a "digital travel credential" (Matt Burgess/Wired)

Matt Burgess / Wired:
Finland, Canada, the US, and other countries are testing tech for passport-free travel, including facial recognition and a “digital travel credential”  —  Smartphones and face recognition are being combined to create new digital travel documents.  The paper passport's days are numbered—despite new privacy risks.