QR codes are a type of barcode that can be scanned using a QR code scanner.

The number pad is used for entering quickly.

3. CCD sensors are known for their high quality and low noise levels.

An automated input device can be used to capture data.

An example of an automated input device used in supermarkets is the machine.

The information stored on a magnetic stripe can include the cardholder's , card number, and expiration date.