Passport Barcode?

What does the barcode tell customs when it is scanned?

Just curious…

Not a barcode, just an easy optic character read. But some already have the same data stored in RFID-chip.

To my knowledge:

type,country of the passport,names,passport number,nationality,birthdate,gender,expiry date of passport,pers. id no.

My passport has a barcode, but I don’t know what it says about me - I think it’s just a link to their own database (fugitives, persona non gratas, stolen passports…) not information per se. Don’t really know - they can’t know more than I’ve told them, can they? :astonished: