[Engels] Dutch public transport ‘OV-chipkaart’ shows balance without authentication

[Nederlandse versie]

When someone wants to use the Dutch public transport services he pays by it using using a so called ‘OV-chipkaart’, an NFC card. Using a web login portal, a traveler can see his current balance. It turns out that everyone can see another card holder’s balance by only offering the card number of that card holder. To me, this causes some unease when we look at the privacy of the travelers.

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