You probably can still hear the beeping noise your pager made. You would send out numbered codes or phone numbers to get in touch with someone. The first paging system was used by doctors in the New York area in 1950. Users paid $12 a month to reach people within a 25-mile radius of the transmission tower. Pagers became most popular in the mid-1990s as the technology became cheaper. Today, pagers are still being used by doctors and in other niche professions.