<div style='float:right;width:100%;' align='right'><em>TNS</em></div>Phil Dworsky uses the Lively app on his iPhone to check on his parents on May 16, 2014 in San Francisco, Calif. (Gary Reyes/Bay Area News Group/TNS) <div style='float:right;width:100%;' align='right'><em>TNS</em></div>Bill Dworsky, 81, shows off the Lively activity sensor attached to the side of the oven door at his home on May 16, 2014 in San Francisco, Calif. Small, multiple sensors installed in key places in his home, monitors he and his wife's activity, so their son can keep a passive eye on them to make sure they are safe. (Gary Reyes/Bay Area News Group/TNS) <div style='float:right;width:100%;' align='right'><em>TNS</em></div>Dorothy Dworsky holds her pill case with an attached Lively activity sensor on May 16, 2014 at her home in San Francisco, Calif. (Gary Reyes/Bay Area News Group/TNS)