Adding wikitude AR capability to existing Xamarin project

Reply only if you have done wikitude on clients' projects. I'm looking for someone to enhance an existing xamarin app to provide connectivity to an existing app. Please share your portfolio of work, reply with the first word, "schadenfreude" The AR requirements are to displaying a 2d or 3d image overlaid on mobile phone camera view. This is triggered by image recognition of a landmark or GPS POI. Further requirements will be discussed in skype interview