david hikingin both am, a gun writer and reviewer tracks and cit ekes new firearms and understand whyhe gun lobby is against technology. >> you have to access the gun, the gun has to work instantaneously. this is an industry that measures success by hundreds of a second. talk to law enforcement. they talk about the response time, the split time between shots, how fast can you make one shot or follow up shots. how accurately can they be made. beyond that you trust your firearm to your watch. what if someone overpowers you. >> if this is taken from you and the person is larger. one thing you can do is we can manually deactivate the handgun. if i knew of you and i, and you take the gun. all i need to do is press the same button, i press it down. deactivate. >> that's like a panic button on the watch. >> yes. >> it will deactivate the firearm. >> in my mind it's a dubious proposition. watches go bad. how many batteries do you have to change. how reliable is the technology. what days do you have between accessing the system? what happens if it fails? there's something else standing between