How can I verify the product effectiveness?

Our product doesn’t block EMR/EMF, by doing so it will block the function of the device that emits the signal. Testing the device with an EMR/EMF meter will not show you a significant reduction of the EMF because instead of blocking the field we are modifying it, not necessarily reducing its intensity. Alternatively, you could test the effectiveness of the device by measuring the change in body’s response to an EMR emitting device with and without our product being applied to it. This could be tested using an encephalograph and other similar devices under laboratory conditions. You can read about verifying the effect here.