Found an interesting quirk of Thai QR code payments.
For some codes, if I scan the code, take the scanned information and create a new QR code, it won't scan in either of the two bank apps I use, saying it's an invalid code.
No changes, just decode and re-encode. Which means that some Thai banks use a proprietary QR format...
But not all. Some are fine and I can add or change ref1 and ref2 to my content.
Weird.
#siamstr
