I looked it up and found the following:this sounds like just what I need for my son if you can at least name the source it be much appreciated.
Bayer has launched a blood glucose meter called the Didget that plugs into a Nintendo DS gaming system. Every time a kid uses Didget to check his blood glucose level, it awards points that can be used to buy items and unravel new game levels within an associated game. Bayer says that the idea behind Didget is to encourage kids manage their diabetes by rewarding them for regular blood glucose testing.
Hope this helps you!