This patent discloses a proximity alarm system for an article. The
proximity alarm system may include a transmitter to attach to the article
and a receiver having an alarm, a set of combination dials, and a
deactivation button. When the article is a cell phone, the receiver may
attach to a person's belt and hold the cell phone. The transmitter and
receiver may be in wireless communication with each by infrared radiation
signals and/or radio frequency signals. When the communication between
the transmitter and receiver is interrupted by distance, objects, or
otherwise interfered with, the receiver may generate a sound, visible
light, and/or vibratory alarm. The alarm may be quashed by turning the
receiver off, moving the article closer to the receiver, and/or turning
the set of combination dials to a secret predetermined number and
pressing the deactivation button.