What Information Are Stun Guns Recording?

In a story about a stolen Stradivarius violin, there's this: Information from a stun gun company, an anonymous tip and hours of surveillance paved the way for authorities to find a stolen 300-year-old Stradivarius violin in the attic of a Milwaukee home, police said Thursday. [...] Taser International, the maker of the stun gun used in the attack, "provided invaluable...