MIAMI (CBSMiami) – Governor Ron DeSantis has signed a new law that requires all public schools in Florida to have a silent panic alarm.

Alyssa’s law is named for Alyssa Alhadeff, one of the 17 people killed in the 2018 Parkland high school shooting.

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The law requires that mobile panic buttons be installed on every teacher and staff’s cellphone as an app.

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It would silently alert law enforcement to life-threatening emergencies on school campuses.

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Schools across the state’s 67 counties will have access to the app in time for the 2021 school year.