Hold phone still, note any variations. Have person move vaxxed arm near it. Move unvaxxed arm. Someone else move their arm near it. That would at least establish that there is no difference in reading. Some of the apps will graph the readings. They're also pretty damn sensitive, where I can detect a ~2" dia magnet from way across the room.
Hold phone still, note any variations. Have person move vaxxed arm near it. Move unvaxxed arm. Someone else move their arm near it. That would at least establish that there is no difference in reading. Some of the apps will graph the readings. They're also pretty damn sensitive, where I can detect a ~2" dia magnet from way across the room.
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