How does VIS use RF signals?
Versus badges emit RF signals in addition to standard IR. VIS uses the RF signals in a number of ways including to signal the need for help. They are also used in a supervisory capacity, so that if a badge is moved to an area without an IR sensor, the RF signal (which travels farther than IR) will notify the system that the badge is still functioning. For example, if a badge is blocked from view of an IR sensor and its signal is not received, the RF signal will penetrate the item blocking the IR, enabling VIS to report the badge’s last known IR location. RF signals are also used to send messages to the system. For example, when a room has been cleaned, a housekeeper can push the “Room Ready” button sending an RF signal to the system telling it the room is now available for use. VIS can also use RF signals to secure pieces of equipment by sending a message to the system when, for example, a laptop leaves a designated zone.
