When used as intended, the QR code is pretty cool. Just point the camera of your smartphone at a QR code and it will magically pop up a link you can tap to visit the designated website. The problem, however, is that you don't actually know what the designated website is.
Fundamentally, that is the problem. You scan the QR code and there is some inherent trust that it points to where you think it should point, or at least that it is not malicious. But Noe’s research illustrates just how easy it is to exploit that trust.
Noe walks through a few scenarios in his blog post. The one that I think is relevant to most people and really demonstrates the problem revolves around QR codes in a restaurant or bar situation. As noted above, most restaurants and bars have implemented a QR code system for sharing their menus—and those QR codes are generally just a sticker the establishment stuck on tables and bar counters.
In his blog post, Noe asks, “When you sit down at a restaurant and see a QR code on the table, chances are you’ll scan it without a second thought, expecting it to take you to the menu. But what if that same QR code was embedded in an email coming from someone you don’t know? Would you be as quick to scan it — or would it give you pause?”Noe and I agreed that QR codes aren’t going anywhere anytime soon. They do offer a simple and convenient way to share or collect information.
It’s not that businesses or consumers should completely shun QR codes, per se. But they need to stop inherently trusting QR codes. People should be cautious and have the same level of skepticism and vigilance that they would with an unknown link or file attachment in an email.3. Inspect QR code URLs closely6.
. You should avoid scanning QR codes if you can, but if you have to scan, at least keep these 7 tips in mind and think twice before you scan that QR code.
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