Both Carv and PiQ are great systems, and we're glad that others share our passion for connected skiing.PiQ uses a single sensor attached to your ski boot and approximates what the motions of the other ski. It doesn't tell you anything about your body position.Carv uses pressure-sensitive insoles, which require you to modify your ski boot by installing it in-between the boot's shell and the inner boot. Carv aims to replace your ski instructor. Snowcookie uses three independent motion sensors - one for each ski and one for the upper body. It delivers accurate information about your skiing technique and body position. It doesn't replace your human ski instructor but works with him/her. It also enables more advanced skiers and aspiring racers to discover more about their skiing technique and limitations.