Here’s something rare: upbeat privacy news. Digital identity vendor Airside Mobile is using biometric identity without storing biometric data in a database, where it’s liable to be hacked. Basically, users copy their passport photo onto their mobile device and then let facial recognition readers at airports match the photo with the person in front of them. It’s a good example of tech designed to minimize privacy risks. Biometrics are especially sensitive because, as someone said after a massive police biometric database was hacked in the UK, you can change your password but not your face.