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An intercom system is an electronic device that enables two-way communication between people. Intercom systems also allow people in a building to grant property access to visitors by opening a door or gate remotely.
Intercom systems have taken many forms throughout history. Early intercom systems required people to talk through metal tubing, which carried their voices like two cans connected by a string. But today’s modern electronic intercoms contain circuitry designed to transmit and receive audio and video digitally.
- Time and attendance systems (T&A) are used to track and monitor when employees start and stop work. A time and attendance system enables an employer to monitor their employees working hours and late arrivals, early departures, time taken on breaks and absenteeism. It also helps to control labor costs by reducing over-payments, which are often caused by paying employees for time that are not working.