the camera of POS used for bar code scanning

Many businesses in the market have to use the scanning bar code to achieve the entry of goods, inventory management, payment and so on. We can often see that some Android POS devices have cameras, so can this camera be used to realize the function of bar code scanning?

What can android POS cameras do?

Android POS cameras can be used to take photos of items while typing, scan and identify files, recognize faces, and of course scan bar codes, including one-dimensional codes and TWO-DIMENSIONAL codes.

What are the advantages and technical difficulties of using a camera to do bar code scanning?

What are the advantages of using a camera to scan bar codes：
Professional scanner is precise, rigorous, good quality, but compared to the camera, lack of flexibility, camera is suitable for a variety of places, because it is convenient to carry and convenient to use, fast, unlike fixed professional scanners need to install to support use, you can go to any cities carried with the POS machine , in the not very formal and professional occasions do simple scanning, identification authentication, so the scanning of cameras have their own domain, which is also a professional scanner can’t replace

What are the problems with the camera scanning bar codes?：

1. Slow focusing speed:

Focus speed is related to camera quality.If the quality of the camera is poor, the focus time will increase accordingly, but with a high quality camera, you don’t have to worry about this basic condition

2. Decoding speed is slow：

Decoding depends on the performance of the device. If it is an old device, it will run slowly
Decoding and code are concerned, first of all, the QR usually has only one format, and there are many kinds of one-dimensional code format, so the code has a variety of situations as below, in the process of the scan code, the camera is just a shot, also need the smart POS to judge what kind of bar code, then analysis barcodes, if the smart POS support most of the code, the judging process will be relatively prolonged, decoding will slow down finally.

 //QR code barcodeFormats.add(BarcodeFormat.QR_CODE); //one-dimensional code barcodeFormats.add(BarcodeFormat.CODE_128);
    barcodeFormats.add(BarcodeFormat.CODE_93);
    barcodeFormats.add(BarcodeFormat.CODE_39);
    barcodeFormats.add(BarcodeFormat.UPC_A);
    barcodeFormats.add(BarcodeFormat.UPC_E);
    barcodeFormats.add(BarcodeFormat.UPC_EAN_EXTENSION);
    barcodeFormats.add(BarcodeFormat.EAN_8);
    barcodeFormats.add(BarcodeFormat.EAN_13);
    barcodeFormats.add(BarcodeFormat.RSS_14);
    barcodeFormats.add(BarcodeFormat.RSS_EXPANDED);
    barcodeFormats.add(BarcodeFormat.DATA_MATRIX);
    barcodeFormats.add(BarcodeFormat.CODABAR);
    barcodeFormats.add(BarcodeFormat.MAXICODE);
    barcodeFormats.add(BarcodeFormat.PDF_417);
    barcodeFormats.add(BarcodeFormat.ITF);

What are the ways of POS camera scanning supported by datamega

Datemaga‘s handheld POS camera have passed very strict quality inspection,it has the functions of taking pictures, recording, scanning one-dimensional code, scanning two-dimensional code, fixed focus scanning, zoom scanning and so on. Besides, through the unremitting efforts of the IT department and the optimization of the analysis method.It not only supports barcode scanning of various formats, all the formats mentioned above, but also improves the speed relatively. Meanwhile, IT has completed the debugging of SDK, and customers can directly use the SDK we have completed to complete the interface debugging of scanning function.The advantages of complete POS scanning are as follows:

1. Support for barcode scanning in a variety of formats (including one-dimensional code/two-dimensional code, all codes mentioned above are parsed), which can be used in a variety of different commercial use scenarios.
2. Support fixed focus scanning, can extend the service life of the camera
3. Support zoom scan, support two-dimensional code automatic amplification, which can be scanned in the case of a relatively long distance.