Pager
A pager, or beeper, is a small wireless device that receives short messages or alerts. Its primary purpose is to notify the user that there is an incoming communication, such as a phone call or a text, and in many models to convey a brief reply or callback information.
Pagers operate on dedicated paging networks that route messages from a central transmission point to individual
Historically, pagers became widespread in the 1980s and 1990s as a reliable means of alerting people before