Spatial Orientation using Quantum Telepathy
  We implemented the protocol of entanglement assisted orientation in the space proposed by Brukner et al (quant-ph/0603167). We used min-max principle to evaluate the optimal entangled state and the optimal direction of polarization measurements which violate the classical bound. 
F.A. Bovino, M. Giardina, K. Svozil and V. Vedral