Don’t Sabotage Your QR Code
“Scanning…” “Hold over QR code.” “Scanning…”
My QR code reader was in a loop of error messages and had no intention of snapping out of it.
“Hold over QR code…”
The real-estate section of our Sunday paper was chock full of QR codes. Most of them didn’t include any instructions—make that none of them. Realtors in our area seem to assume everyone knows what a QR code is and how to use it. Fine with me, but the question is: DO people know how to use them?
Anyone can print a QR code, but making it readable seems to be a challenge at times. My reader had no problem picking up some of the other QR codes, so what was the problem with this specific barcode? (If I got frustrated, I can only imagine how the other recipients felt.)
Let’s look at some QR code basics. I know, “the basics”… how boring. But if folks are out there sabotaging codes at this basic level, how can we progress to the more fancy applications (cups, hats, etc.) I want to talk about in my next post.
• The size.
According to several industry experts, it’s recommended to use a minimum size of 32×32 mm or 1.25×1.25˝, excluding the quiet zone, for QR codes that contain a URL. This guarantees that all camera phones on the market can properly read the barcode.
Granted, as new phones and their cameras improve in resolution, you theoretically can make the code smaller. But—and this is a big but—with a smaller code, you only allow the newest phones to scan your code. You lose the ability for any older phones (and in this technology-driven age, any phone older than two months is an antique) to read your code.
Changing the code size to 26×26 mm or roughly 1˝ square still covers 90 percent of the phones on the market. But the smaller your code, the smaller your audience will be.