Bests & Worsts Reviews from Amazon

I don't understand these glowing reviews! I tried this for days, and it gave me readings all over the map within minutes of each other! I rested my hands on a table, on my lap, several ways, it was absurd how much the readings varied. I think this is a dangerous product! In addition, you need to pay $10 a month just to keep a journal of your readings??? That should have been the tip off for me right there. If this thing worked, it MAY be worth it (although they are still gouging you to simply provide a log of YOUR OWN readings on YOUR OWN device), but this thing CLEARLY is not reliable.