How the foot strikes the ground during walking leaves a distinct print that can be matched with an individual.
A print from a barefoot can reveal your identify nearly as well as a fingerprint.
Foot-pressure patterns may soon be used as another way to identify individuals.
How a bare foot strikes the ground as one walks reveals your identity almost as well as a fingerprint, according to a study released Wednesday.
The discovery means that one day retinal scans, voice recognition and old-fashioned mugshots may be joined by foot-pressure patterns as a means of confirming ID, it suggests.
Previous research has shown that everyone has a unique stride. Computers can determine "gait patterns" -- the way a person walks, saunters, swaggers or sashays -- with up to 90 percent accuracy.
Scientists led by Todd Pataky at Shinshu University in Tokida, Japan, looked at enhancing this finding by measuring how the foot hits and leaves the ground during walking.
They used 3-D image processing and a technique called image extraction to analyze the heel strike, roll-to-forefoot and push-off by the toes among 104 volunteers.