Mariano's, Kimpton Hotels sue over alleged collection of biometric data: 'It's something very personal'

Punch clocks, key codes and ID-badge swipes — they're all so 2010.

A new twist on tracking employee hours or providing access to sensitive work areas relies on biometrics. That's technologyspeak for distinguishing physical characteristics such as fingerprints, palm prints, iris scans and DNA.

But...