System including a hand-held communication device having a motion sensor for remotely controlling the position of a door of a land vehicle and key fob for use in the system

A system for remotely controlling the position of a land vehicle door which is capable of moving between a closed position in which the door covers a vehicle opening and an opened position in which the door uncovers the opening to provide access to the opening, the system comprising:

• a mobile communication device supported on the vehicle for movement therewith;
• a hand-held communication device including a motion sensor operative to provide motion signals as a function of motions made by a pedestrian carrying the hand-held device;
• and
• control logic coupled to the devices, wherein the hand-held and mobile communication devices are capable of wirelessly transmitting and receiving, respectively, command signals as long as the pedestrian carrying the hand-held device is within a first range of the mobile device, each of the command signals containing identification data which identifies the hand-held device and command data which identifies a pedestrian command for the vehicle to automatically perform an operation, the mobile device being operative to remove the identification and command data from the command signals and the control logic being operative to determine if the hand-held device is an authorized hand-held device based on the identification data, and wherein the control logic is operative to detect a sequence of step motions made by the pedestrian carrying an authorized hand-held device when the pedestrian carrying the authorized hand-held device is located within a second range of the mobile device and to generate a door-opening control signal based on the command data when the control logic recognizes the detected sequence of step motions as a door-opening pedestrian command and wherein the second range is less than the first range.