According to Council Regulation No. 1030/2002, residence permits in the European Union have a uniform format, which means that residence permits have the same form in all member states - it can be a sticker or a separate document containing certain information. Obtaining a residence permit in a country of the Schengen zone is useful, as it gives its holder the right to move to other member states of the Schengen agreement without a visa (a travel document with a residence permit replaces a visa). https://www.baltic-legal.com/immigration-eng.htm