The MitID app is the primary authenticator and is intended for your smartphone and/or tablet. If you cannot use the MitID app, you can use the MitID code display, MitID audio code reader or MitID chip.
No matter which authenticator you choose to use, you always have to enter your user ID. If you are using the code display, audio code reader or chip, you also have to enter your password. And if you are using the MitID app, you have to enter a PIN code or use fingerprint/Touch ID/Face ID.
How to log on or approve with MitID app
How to log on or approve with MitID code display
How to log on or approve with MitID audio code reader
How to log on or approve with MitID chip
It is important that you remember never to log on or approve anything with MitID based on a phone call from somebody. There are criminals pretending to be from your bank, citizen services, etc. who will try to make you reveal personal information or log on.
Change authenticator
MitID remembers the authenticator, you used the last time you logged on or confirmed using MitID. If you have several authenticators, you can change between them, once you have entered your user ID. On the list over your active authenticators, you select the authenticator you want to use.
It is a good idea to have a spare MitID to use as a backup. This way you can still use MitID if you lose your authenticator – or you just forgot to activate the app on a new phone before deleting the old one.