

That’s what you’d call a negligent discharge, not accidental. The first time I saw the video of the thug taking Alex’s gun, I immediately noticed and said, “Why the hell is his finger on the trigger?”
There is a concept taught to anyone handling firearms professionally: you DO NOT put your finger on the trigger until you are ready to fire.



It’s not an “if” detector, it’s a “how much” detector. It looks like it’s using the LED chamber to light the film in a consistent way, and then the phone camera measures the color change to quantify how much radiation it was exposed to.