Note the presence of a gun near You.
News on television/social networks about massacres using fire arms by mad people.
Smartphones, guns (prototype with smart-trigger) send their locations by tweet, then, they can be tracked and alarm if the gun devices is near You.
Android phone wit No More app (iPhone in future) send tweet (with ist location in it), as well as the gun with smart-trigger.
Send location by tweet from Android app programmed using Mit App Inventor (quick way to program phone) and make the smart-trigger, send a tweet using Twitter API v2 using a microcontroller or esp8266/esp32 boards (these last, with WiFi build-in capability).
If the smart-trigger prototype works as be expected, it will be a great goal to show this prototype as an example to all fire arms manufacturers so it can be included in their guns for the civil users market