I do not condone using these, but they work.
FREE AIR FROM A GAS STATION UNIT!
Note: This method was only tested using Shell air.
Press the Button on the side 3 times in a row, and voila! Free air without having to pay!
FREE MOVIES AT A HOTEL!!
note: only works on nokia TV systems.
Enter the following code with the remote control :
2-2-1- Down and then push and hold OK
Movies will not be charged to your account!