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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Troubleshooting QR Code Reader Failures
Sometimes your QR Code reader won’t read the code, or the reader will just keep working like it’s trying to do something but won’t. Or it will take you to the wrong page or an error page.
I hate when that happens. You will too. Here are the first things I recommend checking:
Are you scanning a QR Code or a barcode? I know it sounds silly, but I see people all the time trying to scan a regular barcode with a QR Code reader. The good news is that a lot of QR Code readers also read barcodes. But not all do, so this may be your problem. Don’t forget what a QR Code looks like: small squares within a larger square on a white or light background.
Is your device connected to the Internet? QR Codes link the offline world with online content, so being connected to the Internet is kind of important. If you’re not on a network (such as AT&T, Verizon, Sprint, and so on) you need to be in a hotspot, a location with Wi-Fi. Even if you are, make sure you’ve enabled your Wi-Fi in your device’s settings so it can find and connect with the network.
Are you too close to or too far away from the QR Code? Most readers indicate a sweet spot, so to speak, within which ...
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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.