It gets ever more ridiculous: an Airbnb host in Colombia asked me to send my passport details over email.
On the other hand, I have never sent Airbnb my passport. I forgot how I got verified — might have been my old driver’s license.
Also ridiculous: lots of tour operators in Latin America asking for your passport number, even though they never check it. I don’t know if it’s some sort of insurance thing, but I prefer to not make a fuss and instead offer a number close to mine but with a few digits mis-handwritten or trasnposed. Damned be my imperfect memory.