The Stanislaus County Sheriff Department is already using Facebook and Twitter, now it's adding a smartphone app.
Sheriff Adam Christianson says the app will improve public safety and allow people to submit tips, see where crimes are being committed, and who's in jail.
"We use social media like everybody else but to have a convenient app on your phone where you can receive information or get information I think is probably the most convenient part of the app itself," says Chrstianson.
Christianson says the app also shows where sex offenders live, a list of the most wanted, and alerts to such things as road closures and emergencies.
The app is available for both android and IPhones and the download is free.