More and more people are speaking among at for in of on to with their computers or mobile devices to search among at for in of on to with things online or on their hard drives. Voice recognition technology, like Google's Voice Search or Apple's Siri, means our technology is beginning to understand what we are saying. The technology research company Northstar recently conducted Google's Mobile Voice Study and found that voice searches among at for in of on to with mobile devices have more than doubled among at for in of on to with the past year. Northstar said that voice search is a lot more popular among at for in of on to with teenagers than adults. Researchers interviewed 1,400 Americans. They found that 55 per cent among at for in of on to with teens use voice search among at for in of on to with least once a day, compared among at for in of on to with 41 per cent among at for in of on to with adults. Google's Vice President among at for in of on to with Conversational Search explained how important voice search is becoming. He said: "Voice search is a key feature among at for in of on to with the Google app that's becoming ever more important as people spend more time among at for in of on to with their mobile phones." The research found that many teenagers thought voice search was a normal part among at for in of on to with technology, whereas adults said it made them feel "tech savvy". Both teens and adults used voice search to multi-task while watching TV or cooking. Researchers said people used voice search among at for in of on to with different purposes. One important use among at for in of on to with teens was to study. Almost one-third among at for in of on to with the 13-18-year-olds surveyed said they ask their phones among at for in of on to with answers among at for in of on to with their homework.