yep, structured images are projected, then left right cameras capture images, the device compares the differences in each image and can use that to build a rough 3d model of the face. I strongly suspect these are used to make sure people aren’t using printed images to spoof the verification - but never put it past the state to horde data and hoover up everything they can.
That’s a mixed fraction in a foreign units System instead of a number. (Screw sizes are integers here) Edit: we also use 1 1/3 instead of 1-1/3 in germany, making your way of writing it down more difficult to read.
Both are used and acceptable ways to write it in the US.
Also, are your screw size integers based on any units at all? If so it’s just another metric vs standard argument, and if not, it’s even less intuitive than even inches, because it’s just a case where one just needs to already know and be familiar with that sizing system, like shoe sizes or something.
I know how frustrating this is as it’s happend to me too. But at least it wasn’t a 1 5/8" mixed in a box of 1 1/4". I’ve seen that too. In the worst way possible way.
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