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Nice post, learned new things about QR codes. I noticed in the wild when doing check-ins, unreliable QR codes have been due to glossy paper and/or their placeme
by theden 5y ago
Nice post, learned new things about QR codes. I noticed in the wild when doing check-ins, unreliable QR codes have been due to glossy paper and/or their placement, either being too high or low causing distortion. https://datagenetics.com/blog/november12013/index.html https://datagenetics.com/blog/november12013/index.html illustrates the impact of different destruction cases
I'm surprised I haven't seen NFC tags being used for covid check-ins as a secondary option to QR codes
- dbaupp 5y agoThanks! Yeah, glossy paper (or glass) leading to reflections can be bad. The worst one I’ve seen is printed at A5 size (on an A4 page…) and then placed behind glass, outside. Basically useless! I would imagine that NFC requires too much actual hardware, whereas printing is cheap and common.