As I wrote here - an Information Card token is just a string. This means that (with the help of some extra plumbing) you can seamlessly integrate cards into "legacy" technologies. Here's a sample walkthrough for ASMX web services. To transmit the token to the service, I will use a SOAP header. So the first step is to define the header: [ XmlRoot (ElementName = "InformationCard" , Namespace = "http://schemas.xmlsoap.org/ws/2005/05/identity" )] public class InfoCardTokenHeader : SoapHeader { public
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