K-Tunnus is a tool for all Kesko's B2C and B2B customers' to authenticate themselves, and to manage and view their personal and/or company customer information in all Kesko's online channels. K-Tunnus puts the user to the center, and brings together all Kesko's websites, Plussa.com and data protection portal. K-Tunnus consists of 2 visible parts: The widget and the website. The service concept is supposed to be implemented piece by piece, and some key parts of the concept are still to be published.