They also have a back up beacon that works with any beacon. It's basically there for that "hangfire" situation where you might be trying to perform a rescue and there could be a threat of a second slide. It's very small and I would think you would just put it in your pocket. As long as your beacon is transmitting it doesn't do anything. If you go to search, that puts it on alert. If you are moving it still stays passive. If you get buried with your beacon still in search mode and quit moving, it will now start to transmit. I forget what the time lapse was before it would transmit, 20 seconds? Maybe less. He said that it was going to retail for around $150. Not a bad item.
Now that would be a neat little item! I've always been slightly worried about that situation. Well, more worried about the previous situation that might bring about this....but still!!