With more technology comes more need for more exacting authentication. Of course fingerprints have been used for over a century but they can be both covered up and altered same with retina scans, the eyes can change with cataracts and other age related issues,same deal with voice recognition a simple cold can alter the pattern. Leaving technology with an overlooked identification method that may be the most exacting,tongue prints. Not only are they more unique than fingerprints they are also in a protected environment leaving them mostly free from external factors plus there are other things in the plus column,the width and length and the way the tongue is extended for examination. Though nothing is immediately in store for this identification method it couldn't hurt to practice sticking your tongue out!
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