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?

It allows a class of low quality providers to basically trick people into the industry with products that claim but cannot deliver. Then that customer either abandons, or ponys up the real amount of investment necessary for a real solution, and due to being burned already, they are more diligent in their research. Which the industry wants, because too many knock on tech company doors expecting magic genies to grant wishes.