These questions come up and I always wonder about the edge cases. I'm an identical twin. My twin can get get past my faceID consistently, from first release until today. What happens when twins with bad blood start abusing facial recognition?
So, in that instance, your evil twin could steal your ID and travel as you, but they could do that before this system was in place anyway.
Unless both twins are flying on the same day, you could solve this by rejecting matches of people who don't hold a boarding pass for that airport.
Or you could just require a physical ID as backup if the system can't return a match (due to identical twins or otherwise).
It's actually not necessary to have an ID to get through TSA, so please don't encourage it.
Leakage is expected, leading to iteration on edge cases. Some leakage will always be inevitable, no system is perfect.
The legal system is the final recourse mechanism if malicious activity (identity fraud) is detected.
https://www.cbp.gov/travel/clearing-cbp/passenger-name-recor...
https://www.youtube.com/watch?v=EnxfsZrnPv0
(enrolled in the CBP program 1:many program mentioned)
We're screwed, then.
> Fingerprints aren’t included in these genetic similarities. That’s because the formation of fingerprints is dependent on both genetic and environmental factors in the womb.
> The chances of identical fingerprints in identical twins is slim-to-none. While anecdotal articles online often discuss the possibility of a chance that the science could be wrong, no research has found that identical twins can have the same fingerprints.
> [...] As a result, identical twins may have similarities in the ridges, whorls, and loops in their fingerprints. But upon closer examination, you’ll notice differences in some of the smaller details, including spaces between ridges and divisions between branch markings.
[1] https://www.healthline.com/health/do-identical-twins-have-th...
It lowered my confidence in the security of these devices somewhat.