What is the difference between a fixed and mobile RFID reader?

Fixed readers are set up to create and sometimes control access to secured safe zones, parking lots, certain doors, secured room, and track movement of tagged object across certain zones, mostly are applied and mounted in a fixed location like ceiling installation, wall installation and so on. Mobile readers are portable, which may be hand-held or mounted within a truck. They are commonly used by personnel to identify tagged objects or commit inventory counts of merchandise, mobile reader is a comfortable & simple tracking identification tool.