iDIN is a digital identity service offered by Dutch banks. Instead of a password or a document, the user proves who they are by logging into their own online banking, the same way they already do to check their balance.
The user picks their bank from a list, logs in on the bank's own iDIN page, and is shown exactly which personal data is being requested. If they agree, the bank sends that data back and only that data: nothing more is shared than what was asked for. There's nothing to install and no card reader involved.
In eID Hub, iDIN is the provider nlIDIN and supports authentication only.
itsme acquired iDIN at the end of 2025 and launched in the Netherlands in 2026, available through the existing iDIN bank-selection menu. iDIN itself will be fully phased out by the end of 2027.
If you don't already support itsme for Dutch users, now's the time to add it: see the itsme page to get started.