Hitachi demos biometric blockchain authentication

Today Hitachi plans to demonstrate a coupon settlement system using blockchain and biometric identification. The retailers involved include telecom company KDDI’s flagship store ‘au SHINJUKU’ as well as a branch of Mr Donuts. The demonstration is just a pilot with employees and uses the KDDI coupon system.

Biometric identity

Users initially register and use their fingerprint for identification. It uses Hitachi’s proprietary Public Biometrics Infrastructure (PBI). Hitachi doesn’t store biometric data. Instead, it uses the fingerprint to generate a digital signature using public key cryptography. The signature creation is a one-way conversion, and it uses fluctuations so it’s not repeatable. So if you created an identity again, the fluctuations would be slightly different and hence create a different signature.

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