Probably a serial number for the stamp. In the US, you can even pay online and print your own stamp, and it uses the barcode to track when you use it, so it can’t be used twice.
Probably a serial number for the stamp. In the US, you can even pay online and print your own stamp, and it uses the barcode to track when you use it, so it can’t be used twice.
GadgetGirlOz@lemmy.world 6 months ago
That’s really cool. We can’t do that in Australia, would be handy if we could!