Now other companies will offer large amounts of money for this data because they can identify you when you enter stores, walk by things, have your picture online, etc.
This is different to let’s say Facebook because the scans are made at a booth with professional scanning equipment, not some person’s crappy holiday picture with too much backlight.
Also, there is no doubt about who is scanned while on social media you might get on someone’s pictures and Facebook will ask “is this James?” Ehm maybe. Not with delta though.
In a few years you will get extorted for this info bacausenif you don’t let your face get scanned, you can’t fly. Complete distopia.