Sensor in Room (image) University of Washington Caption Sensors sprinkled throughout the home beam information at a set frequency. Wiring wrapped around the sensor acts as a broadcast antenna. The home's electrical wiring acts as the receiving antenna. Credit Gabe Cohn, University of Washington Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.