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Originally Posted by Kymmy
Why would a VOD style system work, unless you scrap scheduled systems, but then everyone would have gone that way including sky....
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A VOD style system would work because it's possible to do linear on demand channels. Only the current channel you're watching then gets sent to your box rather than all of them, and when you change channel a signal gets sent to the headend to send you the different channels stream.
That way 3rd party boxes wouldn't work as they have the upstream blocked, if they talkback they get detected, and if they don't they can't request a channel to watch. VM then wouldn't even need to encrypt the channels as it's a multicast system rather than broadcast and if the channel isn't on your package then you wont beable to request it anyway.
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Originally Posted by Kymmy
What does suprise me especially as cable unlike broadcast sat is a two way system is that they havn't put in a authentication loop back to the central servers ID'ing the box/account/location. Surely a simple cross reference would then inhibit all duplicate boxes or ones not on thier system. Computer games have used this method for years and although people can copy the games they can't play online with them and duplicates keys are soon invalidated on the system.
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Any system like this fails to work whilst you're still sending all the channels down the cable anyway. You'd need an authentication system that only sent the channels when your box had authenticated, at which point you may as well be switching to the VOD model anyway as it offers huge bandwidth savings as unwatched channels don't take up any bandwidth.