The new system, which Gov. Gavin Newsom called the first of its kind in the U.S., will notify residents up to 20 seconds before the shaking starts.

The FBI is investigating an "attempted intrusion by an outside party" to access the Voatz mobile app the state used in 2018.

Kansas Chief Information Technology Officer Lee Allen said the state's iKan mobile app has been downloaded by more than 350,000 of the state's residents since its April 2018 launch.

The app, which uses mobile-phone and surveillance-camera footage to analyze traffic, won $25,000 and a beta-testing opportunity with the D.C. government.

The Washington, D.C. license plate lookup tool is seeing early success on Twitter. Now its creators want to develop it into a fully fledged mobile app.

ShakeAlertLA runs on data collected by a network of seismic sensors designed to give residents precious seconds to brace themselves for major tremors.

Residents will be able to access official documents and register vehicles on the app.

The company has spent a decade helping local governments understand the needs of their communities.

Researchers in Oklahoma City will spend five years studying how a specialized mobile app can influence behavior among one of society's most challenged groups.