Intelligent handheld terminals are intelligent devices for collecting, storing and transmitting information. Intelligent handheld terminals can read bar codes, which is known to all, and is also the most important function of intelligent handheld terminals.

Bar codes can be divided into one-dimensional codes and two-dimensional codes. Can all smart handheld terminals read one-dimensional codes and two-dimensional codes?

The answer is no. The smart handheld terminal can read the barcode principle, when the light emitted by the smart handheld terminal light source is reflected on the barcode, the reflected light is irradiated to the photoelectric converter inside the smart handheld terminal, the photoelectric converter according to the different strength of the reflected light signal, into the corresponding electrical signal.

One-dimensional code is the most original and traditional bar code. Common one-dimensional codes include: EAN code, 39 code, cross 25 code, UPC code, 128 code, 93 code, ISBN code, and Codabar code. As long as you pick up a commodity, there will be a barcode on the back of the commodity. The content of the bar code mainly includes the name of the product, the origin, the price and the date of production.

The storage capacity of two-dimensional code is larger, compared with one-dimensional code, more secure, because of the storage capacity, two-dimensional code can also carry out brand publicity.

Not all smart handheld terminals can read one-dimensional bar codes and two-dimensional codes. When selecting smart handheld terminals, it is necessary to consider the scanning engine of the device. The device with one-dimensional scanning engine cannot read two-dimensional bar codes. Devices with two-dimensional scanning engines can read one-dimensional bar codes and QR codes. Therefore, when choosing a smart handheld terminal, you need to scan the engine. If you do not need to read the two-dimensional code, you can select a device that only supports one-dimensional barcode scanning.