quote [ xon, the body cam division of Taser International, has announced Signal Sidearm, a gun holster sensor that detects when a weapon has been removed from a holster and automatically prompts all nearby body cams to start recording.

The Signal Sidearm, despite its slightly confusing name and provided artwork, isn't a pricey, complex smart weapon, but rather a sensor that can be retrofitted into "most existing firearm holsters." The sensor is powered by a coin cell battery that lasts approximately 1.5 years. It sounds like the sensor is technologically very simple, which hopefully means it's also very reliable. ]