What are the technologies used behind the barcode or scanners?

There are five main types of barcode readers These are pen wands, slot scanners, Charge-Couple Device scanners, image scanners, and laser

This shows the top ten Unitech barcode scanners for POS, including pen scanners, barcode wand, barcode slot readers, cordless and wireless scanners

which ram slot for 1 stick Particularly used in promotional marketing and website This technology is exclusive to the barcode wand reader and the barcode slot

which slot game is easy to win Slot scanners: A stationary barcode reader, they require users to pull items by hand through a slot in the device · Pen wands: As the simplest