Two years ago Germany was the 10th European country to introduce an electronic ID card. Apart from the usual information on the surface the ID card contains an integrated chip carrying information usable for online authentication and digital signatures. This information is meant to simplify the use of eGovernment services and should therefore be capable to provide a better usability of Grid services as well. In this talk we will outline possible fields of application and give a short overview over the technologies involved. Finally we will discuss issues that may influence a quick uptake.