A new facial recognition system can check 36 million images a second. This means that within one and a half minutes of recording you the system can have checked your face against one half of the entire earth's population.
these systems are definitely coming. as someone who has some knowledge of this subject, it's worth noting though that there's a big difference between sifting through 36 million images a second and half the worlds population. these systems specified for a given number of population, the biometrics of that population are pre-loaded into the system and facial images are matched against those biometrics. the system gives results such as 'this image corresponds most closely to this biometric data'
i find it extremely unlikely that such a system exists with biometric data on half the worlds population. who has constructed a biometric database of that size ? there's simply no way
similarly, were such a system to exist with biometric data on half the worlds population then it would be matching at a lower speed simply because every image would have to be compared against 3bn sets of biometric data as opposed to a normal population size (e.g. 100 million).
that said, the technology is for sure at a point where e.g. police in an airport can facial match people going through security with biometrics for known criminals.
the first sign of a mass rollout of this will be when you apply for your passport and you have to use the states camera instead of providing your own photo.
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