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1.2.1 Authentication Methods

This article highlights the authentication methods that are available to you in Addo Sign.

  • None

    if you choose this solution, it will be mandatory to select a method for 'Signing'. Learn more about the signing options here.
  • MitID

    If you choose this solution instead, the recipient of the document will be asked to identify themselves via MitID. This will subsequently also automatically be the chosen method for signing.
  • MitID Erhverv
     
    Same procedure as under 'MitID', and it requires that your signer has MitID business in order to use this method.
  • SMS code

    Signer identifies themselves through an SMS code, and you will be asked to enter their phone number:



    Screenshot 2025-04-11 at 10.58.23

    If you choose this solution, you will be free to select a method for 'Signing'. Learn more about the signing options here.

  • Secret code
    A secret code is predetermined by you as the sender. The code is by nature confidential and should only be known by yourself and the signer. There are no specific requirements for this code, though it must consist of regular letters (a-å) and/or numbers from 0-9.
     

    Screenshot 2025-04-11 at 10.59.33

  • Swedish BankID
    Swedish BankID is used when a person needs to verify their identity and sign on their own behalf. It works in the same way as NemID and can be used with or without a personal identification number. You can read more about Swedish BankID here.
  • Norwegian BankID
    Norwegian BankID is used when a person needs to verify their identity and sign on their own behalf. It works in the same way as NemID and can be used with or without a personal identification number. You can read more about Norwegian BankID here.
  • SITHS/EFOS
    SITHS is a security solution and e-identification that enables users to identify themselves with strong authentication. It is used in Sweden by public institutions. SITHS will transition to EFOS. You can read more about SITHS/EFOS here.
  • Finnish Tupas

    Finnish Tupas is an identification method developed by the National Finnish Financial System. You can read more about Finnish Tupas here.
  • iDIN
    iDIN is a Dutch eID, created by the Dutch Payment Association (BVN, Betaalvereniging). iDIN is a service offered by banks. The service allows consumers to use their bank's secure and reliable login methods to perform actions on other organizations' websites. You can read more about iDIN here.
  • eHerkenning
    eHerkenning is a standardized login system that enables organizations to make their services available online and securely for businesses, officials, and consumers. Users log in to a web service using their eHerkenning token, which allows them to manage their activities online. You can read more about eHerkenning here.