Barcode scanners work by reading the pattern of bars and spaces on a barcode, which represents a unique set of data, such as a product identifier, a serial number, or other information. The scanning process involves three main components: illumination, sensor, and decoder.
Here are some of the best barcode scanner apps for Android:
Barcode Scanner EDITOR'S CHOICE
ZXing Barcode Scanner Functional
QR & Barcode Scanner BEST QUALITY
Free QR Scanner Best Value
ScanLife Barcode & QR Reader Best Value
Kaspersky QR Scanner Best Value
Overall, these apps offer reliable and user-friendly options for scanning barcodes on your Android device. Depending on your specific needs, one of these apps will provide you with the features and functionality you need to get the job done.
Also see QR Code scanners that do pretty much the same thing as barcode scanners.