A method and system is provided that controls pet access to various different locations and/or objects. In a preferred embodiment, the present invention provides an automated system whereby pets wearing an ID tag are allowed access to various locations and/or objects, such as food contained within a feeder dish for example, while a sensor system, responding to the presence of other animals or people, causes the device to close preventing unauthorized access thereto. The feeder further includes one or more sensors using ultrasonic, infrared technology or both in combination for the identification of both tagged and non-tagged animals or children. Further embodiments employ the system to control access to litter boxes, pet toys, pet watering systems, pet gate access, pet containment systems or pet doors.