Deleting the photo doesn't delete the numbers.
A woman holds up her phone, blinks, and turns her head. Four seconds later, the app says 'verified.' That's selfie verification. The app checks that she's a real person, not a printout. Then it turns her face into a list of numbers. It matches those numbers to her I.D. photo.
Deleting the photo doesn't delete the numbers.
According to Tinder's help page, the raw selfie video is gone within a day. But two still images stay. So do her face numbers, for the life of the account.
For fraud teams, face numbers plus an I.D. make a full identity. The app forgot her picture. It kept her face.
An app kept her face numbers. So who keeps your passport photo?
A man stands at a pharmacy counter. The flash pops, and he leaves with two prints. Most people think about where to get a passport photo. Almost nobody asks where the file goes next. Once you apply, the government gets it too.
Your passport picture lands in a searchable government photo pool.
According to the Electronic Frontier Foundation, the F.B.I. could search over four hundred million photos. That 2016 count included passport and visa pictures. Most of those people never committed a crime.
For lawyers, a face match is a <phoneme alphabet="ipa" ph="liːd">lead</phoneme> to check, not proof. Kimberlee Williams spent six months in jail after police trusted a false match. Six months. For a computer's guess.
A false match can cost months. So why do faces fool the software?
Police arrested Robert Williams at home in Detroit for a theft he didn't do. A blurry store video had matched his old driver's license. That's the weak spot in biometric security. Software turns each face into a list of numbers. A small gap between two lists counts as a match.
Your face is the one key you can never reset.
According to AndOpen, one program got about one in a thousand wrong on sharp photos. On real-world images, that rose to about nine in a hundred. Same software. About ninety times the mistakes.
For police, a blurry video should mean far more checking. The software doesn't know you. It knows who you look like.
An app keeps your face numbers. The government keeps your passport photo. Software compares faces in seconds. Each step feels small. Together, they make your face a key you hand out and can't take back. So ask who keeps it.
Links to all three CaraComp stories, every source we used, and today's podcast deep-dives are in the description. See you tomorrow.
