Near field communication module
A Near Field Communication (NFC) apparatus comprises a main printed circuit board and tamper printed circuit board. On the top side of the main printed circuit board are a secure memory element that stores secure applications and secure data, a secure microcontroller that contains firmware for communicating with an external HOST device, and an NFC reader chip. On the bottom side of the main printed circuit board are multiple tamper connection pads and a HOST connector for electrically connecting the main printed circuit board to the external HOST device. The tamper printed circuit board, which is attached to the bottom side of the main printed circuit board, includes a tamper mesh for protecting the main printed circuit board from tampering, multiple connecting pads that are electrically connected to the tamper connection pads on the main printed circuit board, and an aperture that is aligned with and receives the HOST connector when the tamper printed circuit board is attached to the main printed circuit board.
1. A Near Field Communication apparatus comprising:
a main printed circuit board having a top side and a bottom side, the main printed circuit board including:
a secure memory element disposed on the top side that stores secure applications and secure data;
a secure microcontroller disposed on the top side, the secure microcontroller containing firmware for communicating with an external Hardware Oriented Security and Trust (HOST) device;
a Near Field Communication reader chip disposed on the top side;
a plurality of tamper connection pads disposed on the bottom side; and
a HOST connector disposed on the bottom side for electrically connecting the main printed circuit board to the external HOST device; and
a tamper printed circuit board disposed adjacent the bottom side of the main printed circuit board, the tamper printed circuit board comprising:
a tamper mesh for protecting the main printed circuit board from tampering;
a plurality of connecting pads aligned with and electrically connected to the plurality of tamper connection pads; and
an aperture aligned with the HOST connector, the aperture for receiving the host connector when the tamper printed circuit board is attached to the main printed circuit board.
2. The Near Field Communication apparatus of claim 1 wherein the HOST connector and the plurality of tamper connection pads are the only components disposed on the bottom side of the main printed circuit board.
3. The Near Field Communication apparatus of claim 1 wherein the plurality of tamper connection pads includes two sets of tamper connection pads, and the firmware in the secure microcontroller defines which of the two sets of tamper connection pads are connected to the plurality of connecting pads.
4. The Near Field Communication apparatus of claim 1 wherein the tamper mesh and the plurality of connecting pads are the only circuit elements on the tamper printed circuit board.
5. The Near Field Communication apparatus of claim 1 wherein the plurality of connecting pads are soldered to the plurality of tamper connection pads.
6. The Near Field Communication apparatus of claim 1 wherein:
the main printed circuit board includes test points and programming header connections that are used during manufacturing and development processes; and
the tamper printed circuit board covers and makes inaccessible the test points and programming header connections on the main printed circuit board.
7. The Near Field Communication apparatus of claim 1 wherein the tamper printed circuit board is thinner than the HOST connector.
8. The Near Field Communication apparatus of claim 1 wherein the tamper printed circuit board has the same mechanical dimensions as main printed circuit board.
9. The Near Field Communication apparatus of claim 1 wherein mounting screw holes in the tamper printed circuit board are aligned with mounting screw holes in the main printed circuit board.
10. The Near Field Communication apparatus of claim 1 wherein the secure memory element securely stores encryption keys required for payment and access control, which keys can be updated using industry standard methods.
11. The Near Field Communication apparatus of claim 1 wherein the secure memory element is programmable, thereby allowing end users to define customized secure applications to be provided by the secure memory element.