just a little device that monitors things in your body... like tells you exactly how much of everything you have, what your daily rec. value is, how much more you need, etc. how many calories you have taken in so far, how many you have burned, etc. i guess that might be near impossible now, but damn that would be so useful. because i think the reason why a lot of people don't do what they should is because they don't see immediate results... i guess that is kind of stupid, but it' snot like we're ever going to change that.