Finnish Trust Network (FTN) is the society-wide eID system in Finland. It consists of an aggregation of the eIDs issued by 10 banks plus Mobiilivarmenne. Aggregation is done by brokers, which is a licensed role under supervision and auditing. Signicat is an authorized broker for FTN, integrating all the aforementioned eIDs and making them available to Signicat customers through one single integration and one agreement. The FTN system is governed by the Finnish law on Strong Electronic Identification. The banks' eIDs and Mobiilivarmenne are all at Finnish eID level 2, which corresponds to eIDAS level substantial. The eIDs provide themselves only identification and authentication, not signing, but Signicat Sign can be used to sign.
The following banks issue FTN approved eIDs: Handelsbanken, Nordea, OP Bank Group, Danske Bank, Aktia, Saving Banks, POP Bank, Bank of Aaland, S-bank and OmaSP.
The TUPAS protocol previously used by the banks is no longer suitable for Strong Electronic Identification according to Finnish regulations. By 1st October 2019 all banks have replaced their TUPAS interfaces by interfaces based on the Finnish profiles for OIDC or SAML2.