Identifying People By Odor As Effective As Fingerprinting
A study has found that everybody has a unique body odor, like their fingerprints, that could be used as an unique identifier. The study showed that a persons unique odor stayed the same even if they varied their diet with strong smelling foods such as garlic and spices. “These findings indicate that biologically-based odorprints, like fingerprints, could be a reliable way to identify individuals,” said Monell chemist Jae Kwak.
(Via Slashdot)

And while finger-print ID requires touch and a retina-scan requires a person to stand still, scent-ID would require neither – assuming that each person carries a cloud of odor with them. I wonder how much info is contained in the scent. Weight, health, sex?