describe the roaming mobile signature solution deployed by the three mobile network operators Elisa, Sonera, and DNA. This setup was developed in all three operators co-operation under national Telecom technology coordination group FiCom, and it is world's first system where a fully functional co-operating ETSI TS 102 207 roaming service mesh was established in multi-vendor software environment. Another national feature is that mobile phone numbers are portable across the operators, and thus the phone number prefix does not identify the operator. To make things easy for the Application Providers (see ETSI TS 102 204), they can purchase service from any one of the Acquiring Entity service providers (mobile network operators), and reach all users. Part of the background was update of national laws allowing digital Person Identity Certificates (for Mobiilivarmenne use) to be issued also by other parties than official registration authorities via Police offices. Another part was co-operation agreement between the operators on the form of the certificates, and certification procedures and practices producing similar certificate contents with similar identity issuance traceability. All of these were reviewed and approved by the Finnish Communication Regulatory Authority which tasks include the oversight of the identity registration services also at government registries. Mobile ID in Ukraine In Ukraine, Mobile ID project started in 2015, and later declared as one of Government of Ukraine priorities supported by EU. At the beginning of 2018 Ukrainian cell operators are evaluating proposals and testing platforms from different local and foreign developers. Platform selection will be followed up by comprehensive certification process. List of cryptographic information protection tools (and manufacturers), that are legally allowed for use in Ukraine (as of February 19, 2018). Moldavian Mobile-ID Moldcell Orange Moldova MPass Handy-Signatur in Austria Austria started mobile signature by 2003, as a technology of Bürgerkarte (which includes electronic signing with SmartCards). It was provided bei mobilkom Austria, but ended in 2007. After a relaunch in 2009, named Handy-Signatur, it is well used, by 2014 over 300.000 people, 5% of the adult inhabitants, own a registered mobile signature. It is controlled by Austrian Government, National Bank and Graz University of Technology. It is based on a TAN sent bei SMS on request and confirmed with a private PIN. According to 1999/93/EG signing by Handy-Signature is completely equivalent to a handwritten autograph. Technology providers Mobile ID Valimo Wireless, a Gemalto company, was the first company in the world to introduce mobile