Good find Racer, just ordered 3. For me its easier cause the kids walk off with their life-jackets and the key is still clipped on. With these they can just hang them on the handlebar.
I also bought 2 keys like what 68 has a while ago, a couple of mine were not looking good, now I will have them all in wrist straps. Next will be to get them all programmed the same for all the skis, so it doesnt matter witch key I take.