Rounders' bouncers caught fake IDs by quizzing holders on hometown trivia

By the mid-2010s, fake driver's licenses reaching downtown Mankato bars had gotten good: manufactured overseas, ordered online, and increasingly hard to catch by holograms or card stock alone under bar lighting. Rounders Sports Bar & Grill's doorstaff, led by general manager Ryan Tucker, were confiscating passports and hundreds of driver's licenses a year, and every improvement in their detection methods was matched by an improvement in the fakes reaching the door.

Rather than keep investing in better ID scanners or training staff to spot ever-subtler print defects, Rounders' bouncers shifted the test away from the object entirely. A license only proves someone possesses a piece of plastic with a name on it; it says nothing about whether the person holding it has actually lived at the address it claims.

Doorstaff began asking each ID holder a question only a genuine resident of the claimed hometown would know offhand. Someone presenting a Faribault, Minnesota license gets asked which interstate runs alongside the town (the real answer: I-35); an out-of-state ID prompts a question like the state's capital. Staff also learned quirks of Minnesota's own license numbering (the sum of the first three digits of a valid number matches the last two) as an added physical check.

Shifted the test from the document to the holder: asked trivia only a genuine resident would know, which a forger can't fake.

Physical ID features can be copied, but lived hometown knowledge cannot be faked by a typical underage buyer.

The trivia question tests the claim itself, not the document, so it also catches borrowed real IDs.

It required no new technology, only redirecting staff attention from the card to the person.

The method raised the bar for casual fraud, making it a low-cost, high-impact fix.

When verifying credentials, test the holder's lived knowledge of the claim rather than the artifact's authenticity.

Rounders confiscated hundreds of fake, altered, or borrowed IDs and half a dozen fake passports in roughly a year, leading Minnesota's Department of Public Safety to publicly showcase the bar as a model for catching underage drinkers — coverage picked up by the Associated Press. Tucker noted that outright manufactured fakes were actually less common than "hand-offs," of-age patrons lending their own real ID to an underage friend, a failure mode the trivia-question method catches just as well as forgery, since a borrowed ID fails the same personal-knowledge test.