[Rockhounds] from L'Oreal...coming to fluorescent mineral collectors near you

[Cessna, Jeffrey T. Mr. (Fed)]

Seen in a list of the latest advances from CES this year... a 9 mm diameter, 2 mm thick disc that tells your smartphone your UVA and UVB exposure.

See http://bgr.com/2018/01/07/loreal-uv-sense-release-date-price-specs/

I'll have to put mine on my left hand, since tend to hold my lamp in my right hand. It will also sadly restrict me to looking at rocks I can wrap my thumb around.

Jeff Cessna