I needed to change the picture ratio from 4:3 to 16:9 in my Sky decoder box the other day, but didn't have the PIN number to be able to go into the "advanced setup" menu to do it. Hence I rang up Sky, the operator reset the PIN for me on the phone and it was all good afterwards.
After that, just out of curiosity, I started wondering how does the Sky decoder box PIN work????
My understanding was that the PIN was just a value configured and saved in the decoder box locally, but my experience proved that was wrong!!!
Given the fact that the decoder box has no way to tell Sky what PIN number I tried pressing on the remote (Phone line was disconnected on the box, and Sky dish is only for downstream transmission), I am thinking Sky must be maintaining a database with all decoder's PIN numbers saved in it. And that info got broadcasted over the satellite to all decoder boxes. Whenever a user presses a PIN number to his decoder box, the box will match the input up with the one broadcasted from satellite Optus D1 to see if it is valid.
Can anyone in this forum shed some light on this?