I never saw the appeal, but for a couple bucks a piece I might give it a try. It might be bigger then a microchip. Which you can use to scratch the tickets with.
Here in Verona (northern Italy, city of Romeo and Juliet) a guy just won 1 million euros with a ticket and, a couple of days later, 2 million euros with another ticket.
They suspected that he had info from inside the ticket printer but turned out that he's just amazingly lucky.