The Taliban will be able to figure out if they were criminals or Taliban or not.
That leaves a small group of people they can torture to figure out the rest. Just have to hand out these same bioscanners to local police then hand off any matches to the higher organs.
This device had a few thousand people. They can collect hundreds of these devices and rebuild the whole database.
You don't even need to know any specifics: it's a well-known humans tend to punish traitors even if they have a lot in common.
Is this attitude why you and everyone else is making the assumption that exactly every stray biometric identity that can be salvaged from this disaster is guaranteed to be a traitor, and guaranteed to be found and executed by the Taliban? You don't need to explain the Taliban to me - I was born in an Islamic country to a Muslim family - but maybe you can help me understand your alarmist reasoning regarding the biometric identities themselves.
Me: Many people were put in danger
You: While many people were put in danger, there are other people who aren't in danger, so you're alarmist