You would think we have exhausted the range of biological markers that can serve as personal identification and provide access control. You would also think that with all the body parts scientists and the tech community have managed to incorporate into security, we would have found a hack-proof method by now.

You’d be wrong on all counts.

Over the years, voices, faces, blood, irises, and of course, fingerprints have been used to establish positive identification of an individual for various purposes. The business community, in particular, has been interested in such research because it could go a long way in solving the problem of IT-related theft. Already, there are biometric applications in which, say, an iris scan is used to identify an individual in order to give him or her access to data or a physical asset.

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