Handheld bar code scanning devices are generally available in red light (CCD) and laser
a. Red light (CCD)
Diffused light source scanning, scanning distance is relatively close, reading rate is low, the damaged bar code by its obvious! The advantage lies in the price low, applies to the scanning frequency lower industry use! For example: library, small retail store
By laser beams to read bar code scanning data, and can move freely to the object scanning, so the length of the bar code will not be restricted under the scope of permissible, but red light must come into contact with the surface of the bar code to read, laser scanner scan distance is CCD came far, in can be hung across the barcode scan. And high literacy rate.
Wireless bar code scanning equipment is divided into bluetooth real-time and data acquisition
Bar code collection is implemented through bluetooth technology, but it has certain geographical limitations, and can generally be scanned within an effective distance of 10-30 meters within the city. It is widely used in small warehouses and information collection of organs and units.
Communication block connection, not restricted by the region. Applications can be installed on demand.