A method of prefetching addresses includes the step of accessing a stored instruction using a current address. The second network station decrypts the transmitted encrypted first message with a second key portion from the first split of the one key of the asymmetric crypto-key to initially authenticate the user for access, during the session, to store information. The switchback path includes a first opening portion for opening a first area near an inlet side, and a second opening portion for opening a second area away from the inlet side of the switchback path. A light emitting module, system and projection system incorporating the light emitting device are also described, as is a method of manufacture of the device.