Add-on for the novaalert mobileAPP for universal support of emergency buttons on various Android smartphone. In the system settings of the smartphone, the 'panicbutton app' must be set as the APP to be started for the desired emergency button. The "panicbutton App" triggers the "Panic Alarm" in the novaalert mobileAPP. The "Panic Alarm" itself is defined in the novaalert server. novaalert mobileAPP: https://play.google.com/store/apps/details?id=ch.novalink.novaalert