Posted by Marc Martin on
URL: https://www.es-forum.com/Free-Shield-tp1552664p1552669.html

> Maybe they are using radionics? I think the Mega-Chi pendant
> works that way, and it is certainly noticeable to me.

Or, taking a quick glimpse at their website, perhaps it works
via sacred geometry (I believe the Earthcalm devices use this):

http://www.freeshield.com/howitworks.html

Marc