After loading up the app, you can connect to your Facebook, Twitter and LinkedIn profiles, which Current Caller ID combines with your existing contact list.
William Heath, chairman of public service research body Kable, is one of the most outspoken critics of the ID scheme and argues the current way of accessing medical services is the best.
Going further, he believes the ID card scheme in its current form could sound the death knell for government services online at a time when they are just beginning to be adopted by people.