![]() Decoders can be located in different parts of the system but they always exist between the light element and the connection back to the main computer. Simply put, the decoder is the part of the barcode system that translates the physically encoded information into digital signals that it sends to the computer system. While the entire system is referred to as a scanner, this part of the device reads the code provided by the lighting element and transfers that analog data down the system to be translated, displayed, logged, or whatever function the data serves in your system. The laser light creates this reflection for the rest of the scanner to read. When the system reads a barcode, it is reading the reflection of the physical barcode. This is a prime example of a lighting element. You’ve no doubt been made aware of the red “laser” that you use to scan the barcodes on your groceries. How Do Barcode Scanners Work?īarcode scanners are made up of three main components that drive their processes. In theory, the barcode can store as much information as necessary so long as the barcode can grow in width. The black lines and numbers on a barcode utilize a specific taxonomy that attributes information to the different designs and combinations that are possible. What Is A Barcode?Īs stated before, a barcode is one way to visually encode information, allowing that information to be carried in a physical form until it needs to be read by a digital management system. Keep the scanner app in a location you'll remember as you'll need to use it whenever you want to scan a QR code.Reading A Barcode With A Barcode Scanner. Then, point it at your QR code and the app will reveal the hidden information, be it a website link or whatever. ![]() Download and install the app (if it isn't already a default app on your phone) and when you open it, grant permission to use the camera. While there are loads of QR scanners available for free in the Google Play store, the best option is Google's own Google Lens, which offers a variety of text scanning and translation tools but also has a QR scanner. If not, you'll need to download a QR code scanner. If your camera supports it by default then a small link will appear on screen to take you to. You can easily find out if your phone does this by opening the camera and pointing it at the QR code above (load this article later on a different device if you're reading this on your phone). Give it a try: Scan this QR code with your phone's camera. Samsung's Galaxy S21 will read them, as will the Pixel 5, but other phones - particularly older models - may not. New Android phone? Your camera might scan them automaticallyĪs QR codes have become more common, more manufacturers have built QR scanners directly into the default camera app. They can be great time-savers but they're not always obvious in how to use them, particularly if you have an older Android phone. QR codes (Quick Response, if you're curious) are those square barcode-looking things you might have seen that, when scanned by your Android smartphone or iPhone, can send you immediately to a relevant webpage or download an app without having to type in a complicated URL.
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