This is a witty fox NFC Module, The NFC Interface Transponder RF430CL330H is an NFC Tag Type 4 device that combines a wireless NFC interface and a wired SPI or I2C interface to connect the device to a host. The NFC Data Exchange Format (NDEF) message in the SRAM can be written and read from the integrated SPI or I2C serial communication interface and can also be accessed and updated wirelessly.
If want you can make NFC based security door lock and for that you will need few essential components like:
