| 摘要 |
<p>A keyless entry system includes a controller (24) that operates in one of two modes. When an authentication signal is received from a passive signaling device (22, 36), the controller operates in one mode that permits more convenient access to a user. When an authentication signal is not received from the passive signaling device, the controller requires another mode of operation from a manually operable signaling device (26). In one example, the manually operable signaling device is a numeric keypad. When an authentication signal from the passive signaling device is received, any single key can be manipulated to gain the desired access controlled by the system. When no authentication signal is present from the passive signaling device, then the controller preferably requires a specific sequence of key activation before access is permitted.</p> |
