Lots of Taser guns don’t just fire out electrical probes, they fire out dozens of confetti-like pieces of paper. Why?
So in 1993 the AFID system was created. Now, when many Taser guns are fired, they disperse dozens of colourful anti-felon identification (AFID) tags, which resemble confetti and are printed with tiny serial numbers. It would be very time-consuming to pick all the tags up and so inevitably the police are able to find some and trace the gun that was used.