a machine that "writes" the celebs signature on a photo
a machine used to create fake autographs
a mechanical arm that actually holds a pen and is programmed to sign letters with a particular person's precise signature
an instrument that forgers use to recreate signatures
a robotic device with a pen (usually a 'sharpie' but can be many varied writing instruments) that 'signs' the name on a letter or a photo, etc
A device in Big Daddy's office to sign official documents. A handy scapegoat for taking the blame for any signatures that caused Big Daddy problems.
An Autopen is a machine for automatically signing a signature as an autograph.