I recall hearing of a DirecTV or similar network using a trick like that: In the minutes prior to a PPV broadcast, they sent a "Subscriber bonus - call now to c

I recall hearing of a DirecTV or similar network using a trick like that: In the minutes prior to a PPV broadcast, they sent a "Subscriber bonus - call now to claim your free T-shirt" or something, but it was encrypted with a key that the legit receivers didn't have -- only the pirate receivers could decode it. Thousands claimed it... I can't find a source for this anecdote at the moment, sorry.