A German law of 2003 aimed to introduce the electronic health insurance card on 1 January 2006, with a full security and data protection concept and field tests. At a congress at the time, some participants already called the schedule untenable. Only from 1 January 2015 was the card the sole valid proof of insurance. In November 2015 an opposition group in the Bundestag claimed the project had cost over 1.3 billion euros. That figure comes from the questioners, not from the government.