Pixie takes a different approach to the search methodology from any other products. As you may know they beep the tag you have on your keys or whatever item. This is perfectly fine if you can hear it and then isolate where the beep is coming from.
Pixie's approach is to take you to the Pixie Point on your item. The Pixie App and the Pixie Point you place on your phone, work to gather enough data to determine both the distance and the direction to the lost item. We then guide you directly to the item. It is a very different experience, but we feel that it is the next step in location systems.
Here is a video from the Pixie Support site which shows the full search process:
Please let me know if you have any questions.