I know there are privacy concerns with this kind of thing but I think it's a nice use of technology.
I recently came back into the US as a Global Entry member and didn't even have to get my passport out of my pocket. I'm not even a US national. Face scan as the e-gate and straight through. The scanner didn't even have a lag, it probably already predicted I was walking up before I did. No awkwardly scanning to get the right angle, or putting my passport in multiple times to scan. No human in the loop. Are there terrifying ways that could be bad? Absolutely. Technically impressive and convenient? Yep.
I recently came back into the US as a Global Entry member and didn't even have to get my passport out of my pocket. I'm not even a US national. Face scan as the e-gate and straight through. The scanner didn't even have a lag, it probably already predicted I was walking up before I did. No awkwardly scanning to get the right angle, or putting my passport in multiple times to scan. No human in the loop. Are there terrifying ways that could be bad? Absolutely. Technically impressive and convenient? Yep.