Could a possible future I Phone App save us from Future Massacres?

I thought this thread was about asking if IPhones were capable of detecting concealed guns amongst a crowd. They are not. End of story. Suddenly you are bringing metal detectors and the like into the argument. If that had been your original intent the title of your thread would have been "Can metal detectors or similar detect guns?"

Good grief, I give up.

reply to post by dainoyfb

Never mind , lateral thinking cannot be taught.

Just think twice about knocking ideas you don't understand , its so much better to be humble and learn.