On 20/02/2015 18:00, Dave Liquorice wrote:

The Smartphone plugin looks intriguing but the blurb isn't that
convincing about background radiation.


If you find the chinese/english manual (one sheet pamplet) or reviews
for the smartphone plugin you may find that you wouldn't want to waste
your money. It seems to pick up physical (slight) vibration to the
sensor more than it picks up radiation.

Many of the cheap devices only seem to be sensitive enough to pick up
(gamma) radiation levels that may be hazardous to health. They were/are
intended for nuclear war use so you could avoid the hot spots.

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