IT company Hewlett-Packard (HP) says it won’t allow users of its 3-D printers to produce guns unless those users are firearms manufacturers and the weapons that are created can be detected by airport security.

“HP is against ‘ghost guns’ being produced on our 3-D printers,” HP chief executive Dion Weisler wrote in the November letter, obtained by the Oregonian/OregonLive.

HP did not say how it would stop people from using its products to make ghost guns — weapons that are untraceable and unregulated — and it was unclear how the policy would limit their production.

Read more at NY POST.