June 2012
Beginner to intermediate
120 pages
2h 50m
English
Content preview from QR Codes For Dummies, Portable EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Taking Precautions
Try to take these precautions when scanning QR Codes:
Be careful of QR Code stickers. Sometimes a cybercriminal will affix them over legitimate QR Codes.
Pay attention when you scan a QR Code. There’s an interim step between scanning the code and the launch of the browser, when you can see it’s not going to be what you expected and you can abort the action. I bet you do this all the time online when you click a link and you just know it’s headed to the wrong place. You might save yourself a lot of aggravation by keeping an eye on where you’re headed.
Educate those who borrow your mobile device. If you have kids that borrow you smartphone all the time, like my kids do, you should educate them on the potential hazards of QR Codes. This goes for anyone who might use your mobile device on a regular basis.
Some QR Code readers let you see the URL on the code before it links you to the destination. Just remember that many QR Codes use shortened URLs so this strategy won’t always work.
Be wary of QR Codes that say nothing about what they link to. You learned earlier that ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.