2 passports from the same country: how do Schengen countries know?
My country allows for 2 biometric passports. They have different pictures, and number. Same name and date of birth. Schengen allows me to stay following the 90/180 rule. What if I get in and out alternating the passports. Practically, how would they know that I overstayed? How can they trace back if they're practically 2 different passport, and I am not flagged or reported for anything illegal in their system?
It strikes me and I am really curious to know how they would know, practically, that i've been in the Schengen zone for 90 days, and I am getting back in again having no stamp that prove that I have overstayed.
Best Answer
The passport number is not the only data point that countries can use to match an individual.
Among other points that can be used are name, gender, date of birth, place of birth, all of which appear on the passport and together can uniquely identify pretty much anyone on earth, as well as biometrics (when available).
In addition to demographics, they can also match on credit card numbers and this adds a layer of risk to gaming the system with two passports.
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