The sheriff's deputies zoomed alongside the white pickup whizzing down Cliff Road and snapped a picture of the driver using his smartphone to send an e-mail.
Then they pulled him over and wrote him a $50 ticket.
In the war against distracted driving, police are reaching deep into their bag of tricks to catch drivers who tap out text messages, video chat and even watch movies as they roll down the road, so engrossed in their activity that they don't realize they are being watched.
Officers are riding bicycles between vehicles stopped at traffic signals and standing on corners with binoculars to peer into car windows. In Woodbury, police are using GoPro cameras in squads to record drivers who are checking their Facebook pages and sending tweets.
The State Patrol and the Dakota County Sheriff's Office use the spotter system, in which a deputy in an unmarked car or a high-profile vehicle such as a school bus or public works truck spots a driver manipulating an electronic device, then radios ahead to an officer in a marked squad who pulls the motorist over.
"It's not sneaky," said Dakota County sheriff's deputy Tim Gonder, who was working a distracted driving detail on Wednesday, gathering photo evidence as he went, in case drivers claimed they weren't on their phones. "We're using them … to give us the advantage."
Officers can ask to see a driver's phone, which may show screens full of text messages, Facebook pages and the popular FaceTime video chatting app, all things Gonder has seen when drivers offer up their phones. But drivers are not required to hand over their phones, which can make it more difficult for officers to prove their case if drivers won't own up to their misdeeds.
That's why police are resorting to using still digital cameras, squad dash cams and GoPro cameras to document the action. While officers can issue a warning or citation even without proof, images help bolster their case should the ticket end up in court.