The Accustar AT-100 is an alpha-track radon detector for radon measurement in homes, schools and businesses. Alpha-track technology is suitable for DIY radon detectors because it is easy to deploy and it is also sturdy enough for shipment. Once deployed and shipped, the detector foils are counted in the lab using computer-aided image processing. Results are deduced from counts obtained by this process. This type of detector has been rated by consumer advocacy agency (ConsumerReports.org) as the best DIY radon detector in the market.