Transcript for Inside police sting to catch porch pirates
Back now with a look at how police are cracking down on porch pirates. Matt Gutman is in Anaheim, California, with a look behind the scenes of a sting operation targeting package thieves. Good morning, Matt. Reporter: Hey, good morning, George. It is the season when packages start piling up outside our door and the season when they start disappearing. Now, so often this is a crime of opportunity. Sometimes caught on doorbell cameras like this one but now law enforcement is turning to another high-tech device inserting trackers inside packages like these to catch porch pirates redhanded. They are the brazen thieves that strike in broad daylight and in the dead of night. And the holidays aren't just peak seasons for stores but for grinches grabbing holiday cheer right off your doorstep. So across the country police departments are cracking down on porch pirates. "Gma" has exclusively teamed up with the Anaheim police department that launched a program of sting operations to lure thieves by planting gps trackers in packages. What do you intend on putting inside? We are putting in two brand-new iPhones. Reporter: Worth nearly a thousand dollars. The phones and the tracker go into that backpack and that lithium ion sticker maybes it more enticing but porch pirates aren't that picky. They're just taking them. They don't even know what they're taking. Reporter: The next step, the sting. The trap is set. There is the bait. As soon as this package moves even a couple of feet it will trigger an alarm that will go off at dispatch and the dispatchers are going to let officers know that this thing is on the move. If it's a guy that's going two miles an hour we can infer he's walking. 40 miles an hour we know to look for a car. Reporter: Their operation seems to be working. This police body camera footage shows Anaheim officers booking suspects who had no idea the package they were suspected of swiping led police to their exact location. But programs like these across the country rely on another too many, doorbell surveillance cameras. Now ring systems like the ones owned by Adrienne Jenkins are leading to arrests. We share the ring video on the neighborhood app and the police actually caught the guys. Reporter: Now there are a number of things you can do to avoid this. Sign up for delivery alerts from your shipper or you can have your packages delivered to your vendor's local store or do something a lot of the cops are doing and that's getting P.O. Boxes and picking up the packages at your convenience there. Now, it may sound old school, little old fashioned and low tech, but it works. Guys. We'll take it. 'Tis the season of porch pirates.
This transcript has been automatically generated and may not be 100% accurate.