Merely run this program on a command computer as startup and type your username in the input to get a command pocket computer. This program does require the command computer to stay in a loaded chunk to run commands however it still has infinite range and is cross dimensional as long as you keep the command computer chunk loaded. Does not use rednet either so no risk of hacking/intercepting commands.
www.pastebin.com/ypbandS1
Edited by HDeffo, 20 May 2015 - 01:50 AM.