It's a database that's used to help develop suspects from murky surveillance video. But privacy advocates are worried about its accuracy.
Jack Corrigan with nextgov.com says the Next Generation Identification-Interstate Photo System does not have a good reputation.
"The system would flag someone as a potential criminal suspect when they're, in fact, innocent."
Corrigan says the system relies too much on white male faces.
"The systems tends to be less accurate for people of color, which means if you're running them on a general population it's more likely that some of these issues will come up."
Corrigan says he understands why the tech can be useful.
"There might not be a witness but there might be some kind of security camera or some other kind of feed like that, so it is useful in those cases but I think the accuracy issues need to be sorted out because these are being used to make very consequential decisions."
The software the FBI uses is said to be less accurate with women and people of color and critics say that's leading to false identifications. In one funny example, the system flagged 28 members of Congress as matching criminal mug shots.