The Intermec SG20T general-duty EA31 2D barcode imager is black, is handheld, comes with a USB cable, and can be used to scan and decode linear one-dimensional (1D), two-dimensional (2D), and Portable Document Format 417 (PDF417) barcodes. An LED aimer produces lines of light in an omnidirectional pattern to scan barcodes at different angles. The barcode reader's USB cable can be plugged into the USB port of a computer or another host system (sold separately) to transmit barcode data. The barcode scanner weighs 4.41 oz. and measures 2.6 x 2.4 x 7.9 inches (H x W x D). (H is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.) It can withstand drops of up to 4' on a concrete floor. A stand (sold separately) enables the barcode reader to be used in a fixed position.

Barcode scanners, also known as barcode readers, can be used to scan and decode barcodes and to transmit barcode data to a computer or another host system. Barcode readers with a single-line laser can be used to scan linear, one-dimensional (1D) barcodes. Some lasers can produce light in an omnidirectional pattern to allow scanning of barcodes from different angles. Other barcode readers contain CCD (charge-coupled device) light sensors instead of a laser for accuracy and wear resistance. Barcode scanners with raster scanning, area imaging, and other scanning technologies can allow scanning of two-dimensional (2D) or Portable Document Format 417 (PDF417) barcodes, among other types. Some barcode readers provide onboard flash memory to allow the storage of barcode data before transmitting it to a computer or host system through a USB cable or wireless WLAN or Bluetooth connection. Many barcode readers have a handle for handheld use and come with a stand or a charging cradle for fixed position applications, while others are designed for stationary use on a co