In Japan some places require me to sign my name with the exact same way than it's written in my passport using block letters. Normally I'd just write a cursive,

In Japan some places require me to sign my name with the exact same way than it's written in my passport using block letters. Normally I'd just write a cursive, stylized version (without my middle name). Some other names allow stylized signatures, but then they require that the signature must be almost exactly the same every time I write it. Again, not something I'm used to. This, of course reflects the fact that the Japanese don't use signatures to sign contracts. They use personal name stamps. The requirements make sense if you think your signature as a "name stamp that's written manually". Of course, signatures are not names, they have extra cultural, societal and legal baggage, but... just a data point that might be interesting.