A Smart gun that uses facial recognition technology to only allow authorised users to operate it is available for pre-order in the United States. The gun, made by tech company Biofire Technologies, features a built-in camera that scans the user's face before the gun can be fired. The technology ensures that the gun can only be used by its registered owner or authorised users, reducing the risk of accidental shootings or gun thefts.

Smart guns have been a topic of debate in the United States for many years, with supporters arguing that the technology can improve gun safety and reduce gun violence, while opponents believe that the government may use it to create a database of gun owners. The National Rifle Association (NRA) has opposed government mandates that would require consumers to exclusively buy smart guns. This is why they object to any legislation that would make all traditional guns illegal once smart gun technology is available.

The Biofire Technologies smart gun is not the first of its kind, but it is one of the few to have gone on sale in the United States. While the technology has the potential to improve gun safety, it remains to be seen whether it will gain widespread adoption among gun owners, given the political and cultural controversy surrounding the issue.