An autograph is a person's signature, often written by a celebrity or notable figure. People collect autographs as a way to own a piece of history or to connect with their favorite actors, musicians, or athletes. Autographs can be found on various items, such as photographs, books, or sports memorabilia. Collecting autographs can be a fun hobby, but it also requires knowledge to ensure authenticity. Many collectors seek out authentication services to verify that an autograph is genuine. The value of an autograph can vary greatly, depending on the fame of the person and the rarity of the item.