Minnesota particularly frowns on offering evidence at trial that you know to be fake. Sub-categories of Forgery.Using someone else's signature in order to increase the value of property (such as forging an autograph). Using a check from an inaccessible, nonexistent, closed, or frozen account also qualifies as check forgery. Expert Verification: Hire a handwriting expert to confirm if a signature or document is fake. Section 472:- Making or possessing counterfeit seal, etc. , with intent to commit forgery punishable under section 467.