So while every country designs their own travel documents, they all tend to follow (exceptions of course exist ;) the ICAO rules. Once you know about these rules, it becomes really interesting to compare passports, identity cards from various countries. It’s a weird hobby, agreed, but I like these weird things that unbeknownst to many governments big chunks of our modern life. And I respect the often unknown artists/designers that do the hard work! 4/4