Intro to QR Codes: What They Are and How to Use Them Safely
Apr 1
/
Jason Corona
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QR codes are everywhere—from restaurant tables and flyers to product packaging and store windows. But what exactly are they, and how do you use them without putting your personal information at risk?
What is a QR Code?
A QR code (Quick Response code) is a type of square-shaped barcode that you can scan using your smartphone’s camera. It contains information that gets displayed or triggered when scanned—like opening a website, downloading an app, connecting to Wi-Fi, or viewing a menu.
You might have seen QR codes:
- On posters to register for events
- In restaurants to view the menu
- On business cards to save contact info
- In stores to join loyalty programs or claim coupons
How to Scan a QR Code:
Most modern smartphones have QR code scanning built right into the camera app. Here’s how to do it:
iPhone (iOS 11 and up):
- Open your Camera app.
- Point it at the QR code.
- Wait for a notification banner to pop up.
- Tap the banner to open the link or action.
Android:
- Open your Camera app (or Google Lens on some phones).
- Point it at the QR code.
- Tap the link or action that appears on your screen.
If your camera doesn’t recognize QR codes, you can download a trusted QR code reader app from the app store. Just make sure to check the reviews before installing!
How to Use QR Codes Safely:
While QR codes are helpful, they can also be misused. Scammers sometimes create fake codes that lead to dangerous websites or install malicious apps on your phone.
What Should You Watch Out for When Scanning QR Codes?
If you don’t know where a QR code came from—don’t scan it. Avoid codes found in strange places or on stickers placed over existing signs.
After scanning, your phone will show you the website link. Take a moment to read the URL before tapping it. Look for signs of a fake site, like strange spellings or random numbers.
Avoid Entering Personal Info:
Never type in sensitive info like your Social Security number, bank info, or passwords on a page that opened from a QR code—unless you’re absolutely sure it’s legit.
Keeping your smartphone up to date helps protect it from bugs or attacks that can come through shady links.
Use a QR Scanner with a Preview Option:
Some QR apps let you preview the link before opening it—use these when possible for extra protection.
Conclusion
QR codes are an amazing tool that helps us access information faster than ever before—but like any tech, they should be used wisely. Knowing how they work and taking a few seconds to check the source can go a long way in keeping you safe.
Next time you see one, you’ll know exactly what to do—and what to avoid.
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