Different tech for sure. But I have global entry which is all done through facial recognition now (and matching to passenger manifests). No passport needed.

Different tech for sure. But I have global entry which is all done through facial recognition now (and matching to passenger manifests). No passport needed. The camera they used was just a normal DSLR, but it had no problem matching me. The tech is getting really good. In Singapore you can enter through automated gates without ever interacting with a person or showing a passport. All through facial recognition if they have a photo on file (citizens and permanent residents). I assume the tech will get good enough to scan entire crowds very quickly and identify everyone.