To be clear, the technology of engraving or stamping in such a way that it would stamp on softer metal is not really necessarily impossible. What's impossible is preventing it from wearing down quickly to the point of being illegible and it would likely be a moot point fairly quickly.
To be clear, the technology of engraving or stamping in such a way that it would stamp on softer metal is not really necessarily impossible. What's impossible is preventing it from wearing down quickly to the point of being illegible and it would likely be a moot point fairly quickly.
That and the 2 seconds it would take to file off the signature. And of course a criminal would NEVER do that because it would be against the law. LOL.