• Scanner (radio), for searching for and receiving radio broadcasts
• A rotating radar antenna
• Image scanner, which digitizes a two-dimensional image
• 3D scanner, which digitizes the three-dimensional shape of a real object
• Barcode reader, which reads the data encoded in a barcode
• Vulnerability scanner, a computer program that probes for weaknesses
• Lexical analyzer, a computer program
• Stepper, a part of the photolithography process
• An outside broadcast control vehicle
• An automotive electronic control unit diagnostic tool
• A spotlight
• Port scanner, in computer networking

In popular culture, scanner may refer to:

• Scanner (Band), a German speed metal band
• Scanner (Code Lyoko), a fictional teleportation device
• The stage name of British electronic musician Robin Rimbaud
• A floating enemy in the computer game Half Life 2
• Scanners Live in Vain, a science fiction short story by Cordwainer Smith
• A Scanner Darkly, a science fiction novel by Philip K. Dick.

Other

• WikiScanner, a tool that provides a searchable database of anonymous Wikipedia edits

See also

• Scan