QR codes are all over the place these days! Whether it’s menus, boarding passes, payment links, or product pages, QR codes make it quick and easy to access a ton of stuff. Find out how QR codes work and how to scan them here.
What is a QR code?
A QR code, short for Quick Response code, is a two-dimensional barcode that stores information in a pattern of black squares arranged on a white background. Developed in the 1990s by Denso Wave, a subsidiary of Toyota, QR codes were initially used for tracking automotive parts. Today, they serve various purposes, such as directing users to websites, sharing contact information, making payments, and more.
How do QR codes work?
QR codes work by encoding data into a pattern of black squares arranged on a grid. When scanned by a compatible device, such as a smartphone or a dedicated QR code scanner, the encoded information is decoded and processed. This information could be a URL, text, contact information, or other types of data.
How to scan a QR code with an iPhone or iPad
- Open the Camera app on your iPhone or iPad.
- Point the camera at the QR code.
- Wait for the device to recognize the QR code. A notification banner will appear.
- Tap the notification banner to open the encoded content.
How to enable or disable the QR code scanner in iOS
- Go to Settings on your iOS device.
- Scroll down and tap on Camera.
- Toggle the switch next to Scan QR Codes to enable or disable the feature.
How to scan a QR code on an Android phone or tablet
- Open the Camera app on your Android device.
- Point the camera at the QR code.
- Wait for the device to recognize the QR code. A notification will appear.
- Tap the notification to open the encoded content.
Google Lens
Google Lens is another option for scanning QR codes on Android devices. Simply open the Google Lens app, point the camera at the QR code, and follow the on-screen instructions.
How to scan a QR code on a PC
To scan a QR code on a PC, you can use the built-in camera if your device has one, or you can use a webcam. There are various third-party software options available for scanning QR codes on PCs.
How to scan a QR code on a Mac
Similar to PCs, Mac users can use the built-in camera or a webcam to scan QR codes. Alternatively, there are third-party apps available for Macs as well.
Types of QR codes
QR codes come in various types, including static and dynamic QR codes. Static QR codes contain fixed data, while dynamic QR codes allow for the data to be changed or updated even after the code has been created.
QR code examples
QR codes are used in a myriad of industries and applications. Some common examples include:
- Product packaging: Providing product information or promotions.
- Marketing materials: Directing users to websites, social media profiles, or promotional videos.
- Contactless payments: Making transactions through mobile payment apps.
- Boarding passes: Accessing boarding passes for flights or events.
Third-party apps
In addition to the native camera apps on smartphones, there are numerous third-party QR code scanner apps available for both iOS and Android devices. These apps often offer additional features such as QR code generation, history tracking, and more.
Are QR codes safe?
While QR codes themselves are not inherently unsafe, there are risks associated with scanning unknown or untrusted QR codes. It’s essential to exercise caution and only scan QR codes from trusted sources to avoid potential security threats.
QR code scams
QR code scams have become increasingly prevalent, with cybercriminals using QR codes to distribute malware, steal personal information, or redirect users to phishing websites. To mitigate the risk of falling victim to QR code scams, users should only scan QR codes from reputable sources and be wary of unsolicited QR codes.
To wrap up, QR codes are handy tools that make it easy to get information and interact with stuff online. By knowing how they work and scanning carefully, you can use QR codes safely in your daily life. Whether you’re using them for ads, paying for things, or sharing info, QR codes are a big part of how we connect online.
