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Interesting! I thought it was effectively “already here” despite not being deployed much/at all. Surely the value of gait over iris would be that you don’t nee
by ethanbond 3y ago
Interesting! I thought it was effectively “already here” despite not being deployed much/at all.
Surely the value of gait over iris would be that you don’t need ridiculously specialized sensors right? Can use (hypothetically, I guess) a bunch of CCTV sending that’s already out there.
- Tade0 3y agoIris sensors are just NIR cameras illuminated by a maximum of three different frequencies. Samsung used to put them in their phones and they seem to have been using just one frequency.
- ethanbond 3y agoRight but those are not installed on every corner and store in every western city like standard “gait-sensing” cameras are.
- Tade0 3y agoActually, most of the 24/7 surveillance cameras that I've seen already include a ring of NIR diodes for night vision and a sufficiently close photo from one would suffice. Even better: the wavelengths used are in the range of 700-900nm, which, as indicated by my smartphone camera picking up the 850nm diodes in my Leap Motion controller, are within the range of off-the-shelf camera sensors. For a decent image you need the iris to span 70 pixels. A Full HD camera probably won't cut it, but a 4k one installed at the entrance of a building might well be scanning irises and we wouldn't even know it.