The Family Radio Service (FRS) is a private, two-way, short-distance voice and data communications service for facilitating family and group activities. The most common use for FRS channels is short-distance, two-way voice communications using small hand-held radios that are similar to walkie-talkies. The service is licensed-by-rule so the general public can use the devices without having to obtain a license and channel sharing is achieved through a listen-before-talk etiquette.