TUPAS is a strong digital authentication method created by the Federation of Finnish Financial Services. TUPAS identification is a de facto standard for digital identification in Finland. It is used by all major Finnish banks including Aktia, Osuuspankki, Nordea, Danske Bank and S-Pankki (formerly Tapiola). Furthermore, TUPAS is used also by Finnish government to log into Kansaneläkelaitos and Finnish Tax Administration site vero.fi.
