Configuration of building automation system controllers using near field communication

A controller, comprising:

• one or more processors;
• computer-readable memory;
• a Near Field Communication (NFC) transceiver;
• and
• a NFC tag including NFC memory that stores identity information corresponding to the controller;
• wherein the computer-readable memory of the controller is encoded with instructions that, when executed by the one or more processors, cause the controller to:
• retrieve, via the NFC transceiver, configuration parameters stored in the NFC memory;
• and
• configure the controller using the retrieved configuration parameters.

A method of configuring a controller, the method comprising:

• storing, in memory of a NFC tag associated with the controller, identity information corresponding to the controller;
• retrieving, by the controller after transition of the controller from a powered-off state to a powered-on state, encrypted configuration parameters stored in the memory of the NFC tag;
• generating, by the controller, a symmetric key based on the identity information corresponding to the controller;
• decrypting, by the controller using the symmetric key, the encrypted configuration parameters retrieved from the memory of the NFC tag to produce decrypted configuration parameters;
• and
• configuring the controller according to the decrypted configuration parameters.