Well, it's not really a verification method, it's the use of age estimation models in a computer vision sense. The problem with age estimation models is they are only better in statistically unreliable ways within controlled ethnic demographics. That word salad means that age recovery trained algorithms have a variance of accuracy that is difficult to reduce, and when successful is only successful on narrow classifications of ethnicity. Part of the issue is ethnicity carries meaningful changes in age representation. Asian, African and several other ethnicity show age later and significantly more subtle than others. Now add in the existence of large demographics of mixed ethnicity, and then add in the issue of the uncontrolled illumination age verification systems are expected to operate... and age verification computer vision is rendered kind of useless. Kind of a joke. Kind of leading one to think anyone trying to sell a solution here could be dumb or a fraud. Might be some new breakthrough, but could it?

I’m not sure - I think between the NIST tracks for age estimation and the work entities have done to gather large, diverse sample sets shows meaningful progress and perhaps real world usage.

Your points above are valid and real concerns, in addition to liveliness. There is work further to be done and improvements to be made. But it seems to me that they are solvable problems.

These datasets are getting granular, monolid vs non, 12+ different ethnicity sub groups and so forth.

Do you not think that with enough data it’s solvable?