OKLAHOMA CITY - John Karlin's home is a fortress.
He's installed cameras everywhere, hoping to catch the next 'porch pirate.'
"They got my medication, my son's Halloween costume. It's a loss of trust. You feel like you've been violated," Karlin said.
Over and over again, John has captured several different people stealing his packages and his elderly neighbors'.
"You have diabetes medication, heart medication, blood pressure medication. It's being stolen. Now, you have an elderly person that's in trouble because they don't have their meds. That's a major problem," he said.
John has tried everything to deter the thieves.
He even tied fishing line to one package, with bells attached.
However, not even a noisy box stopped the package thieves.
"Some of these people just casually walk off with bells ringing on down the street. And I find some torn up package a half block away," he said.
Future crooks need to watch out because Karlin says he is stepping up his game.
This local homeowner is now planting GPS tracking devices inside boxes and leaving them on his porch.
"Wrap it up and wait. And whoever steals it will get caught this time. I can track them anywhere," he said.
The criminal activity is being shared through the Nextdoor App.
It is the neighborhood watch program of the next generation.
"As soon as I see a package dropped off, I notify my neighbor. If I don't have their number, I use this neighborhood app to say 'Hey, UPS just dropped a package at your door. You coming home soon? Want me to grab it?" Karlin said.
The Nextdoor App is free and currently used by nearly 500 neighborhoods in the greater Oklahoma City area.