A San Diego attorney explains the intricacies of forgery and falsification of documents under California Penal Code 470 (PC). Penal Code 470 - This code covers the act of forging or altering various types of documents, including business records.Under California Penal Code 470, forgery is a serious crime. It can mean altering a document, faking a signature, or even duplicating someone's seal. Maybe, there are many types of forgery. Riverside County and San Diego based forensic document examiner delivers exceptional results for forged signatures, altered, and electronic documents. Forgery is a white-collar crime because it typically involves individuals in business, government, or finance who seek monetary gain through illegal means.