Oki Japan has developed software that brings iris recognition security to existing cell phones.

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Before now, biometric security has meant either hugely expensive military systems or cheap, novelty peripherals. This new development is part of a growing number of practical and affordable solutions. The software can be used to add another layer of security on any device that has a camera of at least 1 mega pixel and is claimed to only give one false positive for every 100,000 scans.
[Digital World Tokyo] via Gizmodo