Information Delay Protocol Using Quantum Teleportation

A information delay protocol using quantum teleportation is presented in this paper. By sharing EPR (Einstein-Podolsky-Rosen) pairs one person can give the other one some information which cannot be read until he or she lets the latter do it. The principles of quantum mechanics guarantee that the protocol is unconditionally secure. When the one decides to let the other to get the information, he need only to send some dictates on a public classical channel. So the protocol is easier to carry out and more robust in practice.