For Bipper, an app developer based in Bergen, Norway, a safety tool for women evolved from an existing design for kids.

FORBES: Women Developers Build Mobile Safety Apps

The U.S. Supreme Court held in a 2003 ruling that sex offender registration is a public safety tool not intended to punish offenders.

CNN: Report: Registry does more harm than good for teen sex offenders

It is entirely possible that, like the Bulgarians, Castro sees an opportunity to exploit Western concerns about nuclear safety as a desperately needed tool for leveraging concessions from the United States.

CENTERFORSECURITYPOLICY: Center For Security Policy

For parents, teachers, community leaders, law enforcement officers, elected officials, ordinary citizens, and others concerned about the health and safety of our young people, the Strategy is a valuable tool that not only informs but also can serve as a catalyst to spark positive change.

WHITEHOUSE: 2012 National Drug Control Strategy

Creating a tool that combines both public and private sector data about housing, safety, the environment or even the potential for a natural disaster can be help those 35 million people make a more informed choice when looking for a new home.

WHITEHOUSE: Back my Napkin