We are always looking to "level-up" on our health, and added protection from EMFs is something we were looking to invest in. Research about the detrimental side-effects of all the technological devices that surround us today will likely not come out as general public knowledge until years from now.After looking at all the offerings on Amazon, we decided to try two of them. The Hedron is patent-pending, which at the very least shows they believe they have something valuable worth protecting. Although it is difficult to measure ourselves whether or not it is working, there are two pluses that we can attest to. Firstly, we have greater peace of mind, as well as greater awareness to reduce our exposure to bad EMFs, second, the resources and customer service at Educating Wellness is excellent and they really make an effort to answer all questions. The doctors who created these devices are public about their support and you can find their videos online to explain things. Make your own informed choices, but for us, the potential benefit of these far outweigh the cost.As for the device itself, we placed them on the back our our smartphones, it gives the back a little bit of a bump, but if you place it near the top, it gives it a bit of angle and can increase the visibility when it's on a table or desk in front of you.