scanner

noun6

1. •
   A device which scans documents in order to convert them to a digital medium.

   • He put the picture in the scanner, then e-mailed a copy of it to his family.
2. •
   A device which scans barcodes or QR codes for the purpose of charging a customer, performing a price check or enquiry, printing a price label or sticker, checking an item in or out of the store or warehouse, or finding an item ordered through click and collect and its corresponding location; a pricing gun or HHT.
3. •
   A device which uses optics to detect printed data (such as a barcode).
4. •
   A device which uses radiation (ultrasound, X-ray, etc.) to generate images of tissue or surfaces for diagnostic purposes.

   • Chorban: I'm using a small scanner to gather readings on the keepers. Chorban: So far, I've had mixed results. I find it difficult to get near the creatures. — 2008
5. •
   A radio receiver which iterates through a sequence of frequencies to detect signal.
6. •
   One who scans.

   • It is, perhaps, too much to assume that an elderly Melville read James, but he was an eager scanner of magazines and did read fiction in his later years. — 1997