[ RadSafe ] WikiSensor - iPhone rad detector

Hansen, Richard (CONTR) HansenRG at nv.doe.gov
Thu Nov 3 14:14:17 CDT 2011

Has anyone tried this product?
I have not tried it and am not endorsing it, just wondering if anyone has checked to see how well it works.

WikiSensor dosimeter

This is a software application for the Apple iPhone that uses the video camera ("Facetime" camera above the screen) to measure gamma and x-ray radiation. The camera lens is covered with opaque tape (such as black "electrical tape"). In a low radiation background area, the software measures the camera pixel "hits" in thirty seconds. This is used as the reference level subtracted from future measurements. Then, when the user selects a measurement, a 30 second measurement is made and the net pixel hit counts (measurement minus reference level) is converted into a rate in microsieverts per hour. Video shows tests with I-131 and Tc-99m.  A PDF file (in French) is also available for download showing counts from a "Cesium" and "Cobalt" sources.

Best regards,

Rick Hansen
Senior Scientist
CTOS - Center for Radiological/Nuclear Training at the Nevada National Security Site
National Security Technologies, LLC (NSTec)
Contractor to the United States Department of Energy
hansenrg at nv.doe.gov<mailto:hansenrg at nv.doe.gov>

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