Even though tongue prints are proving to be a safer biometric authentication than fingerprints or eye scans it will still be awhile before you'll be using lick to open technology. Fingerprints can be altered, smeared and other wise ruined for identification purposes, same deal with eyes, they can change with age or eye disease and both fingerprints and eye scan can be obtained fairly easily for nefarious purposes. Enter the tongue print...since the tongue lives in your mouth it would be harder to make someone use their tongue for ID purposes short of cutting it off. The problem is there is no data base at this time that catalogues tongue prints but don't be surprised when tongue prints become the next security authentication.
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