SENTRICARD

Portable computer memory cards for storing information and for interfacing with an electronic lock box to provide secure access to office buildings[, factories, ]dwellings, and[ warehouses;] portable computer memory cards for storing information and for interfacing with an electronic lock box to provide secure access to enclosed real estate, and[ fenced-in fields; portable computer memory cards for storing information and for interfacing with an electronic lock box to provide secure access to movable objects, namely, vehicles, aircraft, and vessels]