The AR-ENIGMA
Volker Paelke, Joerg Stoecklein, Lennart Groetzbach, Christian Geiger, Christian Liwai Reimann, Waldemar Rosenbach · 2002
The AR-ENIGMA combines a PDA (personal digital assistant) with a camera, a high-speed wireless network connection and AR (augmented reality) technology to enable museum visitors to interact with an Enigma encryption machine.