Anyone know if the bar code on the TB tag has any real meaning? I'll bet Brdad - who lurks on the national geocaching chats - would know. Right? :D:D
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Interesting. My android's barcode scanner can read the regular size but not the micro size and I tried multiple scanners. I'd like to see what it manually takes to read these as well.
I like your rendition better though...LOL
I can't decode the micro (damn micros) QR code either, tried 3 different readers, even ZXing (Zebra crossing) doesn't support it. Only what is left is do it manually, however the one I posted cannot be decoded, I just cut it from a bigger one :) so checksums will not match.
How QR codes are made.
Here is an article how to create a level 1 QR code. http://www.swetake.com/qr/qr1_en.html I guess micro QR will work the same way.
If you want to decode it, just do the same in reverse order. A large portion of the article is about error correcting codes and verification checksums. Little bit of math, but you don't need that, since you will be decoding a QR code that is not damaged.
I say embed the coin with a microchip like they have for animals, then maybe they won't get lost :D