3 ms·

There are also a lot of legal gun owners who have a gun but are not a threat.

• umlaut 9y ago
  That's true in the US, but not in many other places (the UK for example).
• cityhall 9y ago
  They seem to be spotting visible guns, not concealed ones, and the focus is on guns being brandished instead of holstered. This is preliminary work but it wouldn't be useful to have an alarm go off every time another police officer or security guard comes into view with a gun on his hip.