摘要: |
Cellular telephones (CT) made their debut in the mid 1980s. Today, they are a popular form of communication, with over 147.5 million US citizens subscribing to cellular telephone service. This number continues to rapidly increase, a trend that will likely persist. CTs have emergency, medical, and security benefits. Cellular telephone owners have used their CTs to report drunk drivers, request emergency medical treatment, and report serious crimes. Cellular telephone technology has advanced to the point where persons can use their CT to send and read electronic mail, search the Internet, play games, organize their calendar, and even take and send photographs. |