I don't think a smart gun has ever been sold to consumers in the US. The technology simply isn't reliable enough to be useful. The one model that a company did try to market was so expensive and unreliable[1] that no store imported it. Also people were worried about the built-in kill switch.

1. https://www.americas1stfreedom.org/articles/2014/8/8/whats-s...

why does it have to be biometric at all? Just make it 2FA. Make it so that the bracelet and the tool have to be within, say, 1m of each other and that seems like a viable solution (And obviously have the ability to disable this feature if the user wishes)

"(And obviously have the ability to disable this feature if the user wishes)"

True, that didn't really come to mind since they don't generally talk about allowing that for guns. The best thing is probably using one's phone as the token since the phone has bluetooth and this article mentions that the tools are unlocked with that.

The reason I brought up biometrics is that the unlocking 'token' is less likely to get lost than the bracelet, etc. But that does bring up another good point, that some of the common biometrics like fingerprints wouldn't work since many people wear work gloves.

Although, it would provide a good large-scale proof of concept for smart gun tech if it worked the same as the proposed smart gun tech.

"Lost my phone and now I can't use my power tools...."

— Future internet of shit post

Not if it's using an app that stores the info in some manufacturers database (just imagine the marketing goldmine of tracking users usage).

"The manufacturers website is down and now I can't use my power tools...." — Future internet of shit post