I love when people decode data like this. I am curious about the postage codes used in Sweden since 2021. Instead of buying physical postage stamps, you can bu

I love when people decode data like this. I am curious about the postage codes used in Sweden since 2021. Instead of buying physical postage stamps, you can buy a code online. It is meant to be written on the envelope in the place where you'd normally place a stamp. It has 4 x 3 symbols all are numbers or upper case letters. Looks like this: A X X 2 T T 2 Y 3 M 3 5 I assume some letters are omitted for clarity, like I vs 1. And presumably, there is error correction built in. I imagine the error rate from writing by hand and OCR-ing them is quite high. I wonder if there is anything interesting in there like a time stamp, or if it is just a serial number.