RFID-mechanical dual-mode entry key

A key for use with a dual-mode mechanical and a radio frequency identification vehicle entry system, the key comprising:

• a mechanical blade, formed of a first material, capable of being received by a lock cylinder of the vehicle entry system;
• a housing, formed of a second material, the housing couple to the mechanical blade;
• wherein the mechanical blade extends from the housing and the housing serves as a handle for the blade;
• a microantenna having a pair of connectors disposed in the housing;
• a first microcircuit having a pair of connectors disposed in the housing, the first microcircuit being selectively and operably connected to the microantenna;
• a second microcircuit having a pair of connectors disposed in the key blade housing, the second microcircuit being selectively and operably connected to the micro antenna;
• a double pole, double throw switch disposed in the housing, the double pole, double throw switch having at least a first position and a second position;
• wherein the double pole, double throw switch selectively switching the pair of connectors of the microantenna between the pair of connectors of the first microcircuit in the first position, and the pair of connectors of the second microcircuit in the second position;
• whereby the selective and operable connections offer a closed passive circuit for the radio frequency identification vehicle entry system.