QR codes are squares arranged on a white background and contain both horizontal and vertical alignment patterns to assist with accurate scanning.
Scanning QR codes
To scan QR codes, you need a device with a camera, such as a smartphone or tablet. Most modern smartphones have built-in QR code scanning capabilities in their camera apps. Open your device’s camera app and point it at the QR code. The camera should recognise the code and display relevant information or ask if you want to open a link.
QR code reading applications
If your device does not have built-in QR code scanning, you can download a QR code scanner app from your device’s app store. Popular QR code scanner apps include “QR Code Reader” for Android and “QR Code Scanner” for iOS. These apps use your device’s camera to scan the QR code and provide you with the decoded information.
QR code data types
QR codes can store various types of data, such as:
URLs: Scanning a QR code containing a URL will open the website in your device’s browser.
Text: It can contain plain text, which might be a message, contact information, or any other textual data.
Contact Information: QR codes can store contact details, making it easy to add a new contact to your address book.
Wi-Fi Network Information: Scanning such QR codes can connect your device to a Wi-Fi network without manually entering the details.
Geolocation: Some QR codes encode geographical coordinates for mapping applications.
Payment Information: QR codes can be used for mobile payments like Apple Pay, Google Pay, or cryptocurrency transactions.
Creating QR codes
You can generate QR codes for various purposes using online QR code generators. These generators allow you to input the data you want to encode and create a QR code image that you can download and use.
Security considerations
Be cautious when scanning QR codes from unknown sources, as they can potentially lead to malicious websites or actions. QR codes can also be used in phishing attempts, so always verify the source before scanning.
Evolution of QR codes
QR codes have evolved to include more features, such as high-capacity QR codes capable of storing larger amounts of data and QR codes with embedded images or logos for branding.
QR codes have become an integral part of modern technology and are used in a wide range of applications, from marketing to logistics to contactless payments. Understanding how to scan and read QR codes can be a useful skill in today’s digital world.