Other than a few isolated pieces of research into the uniqueness of the retina (which was finally turned into a workable product in 1985), the biometric industry remained fairly static until the 1960s, when the Miller brothers in New Jersey, USA, launched a device that automatically measured the length of people’s fingers. Speaker verification and signature verification were also developed in the 1960s and 70s.
Interest from the US armed forces and intelligence agencies then emerged, but it wasn’t until the turn of the century, and in particular until after 9/11, that the awareness of biometrics broke out of specialized industry circles to reach the fever pitch levels seen today.
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