[bsenftner]

The tech is there, it works. The current hurdle is getting understanding between the practical limitations of modern computers, the resolutions and image characteristics of various cameras. Trying to use a 2K or 4K video stream simply overwhelms the current generation of processors in the systems 'normal' organizations can afford. Plus those video streams are often up-scaled and are lower resolution in their hardware, very wide angled, and placed poorly for FR. Basically, the tech is there, but the practical aspects of using FR with typical financial and logistical constraints is not there yet. This practical aspect is just the normal learning curve.

Facebook's FR is nowhere but FB, forget it. There is a range of false positive rates, depending upon how an FR system is employed. The best resource for the state of the art is probably this: https://nvlpubs.nist.gov/nistpubs/ir/2017/NIST.IR.8173.pdf (FYI, my work is vendor "L")