On October 13th, 2018, two men walked into a Great Midwest Bank in a suburban strip mall outside Milwaukee. They were the first two customers when the bank opened, barely recognizable behind sunglasses and heavy beards — but it soon became clear what they were after. One man jumped onto the teller counter and pulled out a handgun, throwing down a garbage bag for the tellers to fill with money. They left the bank at 9:09AM, just seven minutes after they entered, carrying the bag full of cash, three drawers from the vault and teller station, and the keys to the bank vault itself.
In the months since, police and federal agents have struggled to track down the bank robbers. Local media sent out pictures from the bank’s security cameras, but it produced no leads. Finally, police hit on a more aggressive strategy: ask Google to track down the bank robbers’ phones.