It is highly recommended, and often necessary, to apply for a DigiD. DigiD stands for "Digital Identity" and allows you to securely access a wide range of Dutch government and public services online, such as registering for healthcare, viewing your study finance (DUO) or filing taxes. You can apply for a DigiD at digid.nl, but you must already be registered with a Dutch municipality and have a BSN (Citizen Service Number). After applying, you’ll receive an activation code by post at your Dutch address, which you’ll need to complete the process.