RFID device with changeable characteristics
View Patent ↗An RFID device includes a first, relatively permanent portion and a second alterable or inactivatable portion. Upon the occurrence of some predetermined event, the second portion and/or its coupling to the first portion is physically altered, inactivating it. The first portion may itself be an antennaless RFID device that may be read at short range, and the second portion may be an antenna that, when coupled to the first portion, substantially increases the range at which the first portion may be read. The second portion may be configured to be altered or inactivated by any of a variety of predetermined events, such as involving physical, chemical or electrical forces, performed either on the RFID device, or upon an object to which the RFID device is coupled.
1. A radio frequency identification (RFID) device, comprising:
an RFID device including a transponder chip;
an antenna coupled to the chip and there is a fusible link between the antenna and an electrical ground system;
a low-current power supply and a main power supply each coupled to the RFID device through at least one RF choke section; and
wherein the main power supply alters a function of the RFID device when the power supply is activated decoupling at least portions of the chip from the antenna and wherein power from the low-current power supply is applied directly to the transponder chip.
2. The device of claim 1 , wherein a low current power is the power supply for RFID device.
3. The device of claim 1 , wherein the power supply is a 12-volt power supply.
4. The device of claim 1 , wherein the power supply provides a higher voltage of sufficient charge to power electroluminescence backlights on telephones and computers.
5. The device of claim 1 , wherein a current supply causes the antenna to burn out at least a portion of the antenna.
6. The device of claim 1 , wherein the fusible links become open circuits upon application of power to the antenna.
7. The device of claim 1 , wherein the RF choke section is a fusible link.
8. The device of claim 1 , wherein either the main or low-current power supply is a battery.
9. The device of claim 8 , wherein the battery is held within a holder that provides at least one first contact and at least one second contact.
10. The device of claim 9 , wherein the at least one first contact is couplable to a pole of the battery and the at least one second contact is couplable to an opposite pole.
11. The device of claim 1 , wherein either the main or low-current power supply is a battery without a pole.
12. The device of claim 1 , wherein both the main and low-current power supply are a battery without a pole.
13. The device of claim 1 , wherein both the main and low-current power supply are a battery.