SYSTEM, METHOD AND COMPUTER READABLE RECORDING MEDIUM FOR LINKING TELEVISION AND SMART PHONE USING IMAGE AUTHENTICATION KEY

Disclosed herein is a system for linking a smart TV and a smart phone of a user using an image authentication key capable of registering the smart phone in the smart TV using an authentication key in an image form such as a quick response (QR) code, or the like. The system includes: a service server configured to generate an image authentication key comprising access information, configured to provide the image authentication key to the smart TV, and configured to provide terminal information from a user terminal to the smart TV, to link the smart TV and the user terminal; a terminal access application installed in a smart TV configured to request the image authentication key from the service server, configured to receive the image authentication key, and configured to display the received image authentication key on a screen; and a user terminal configured to scan and analyze the image authentication key displayed on the smart TV, and configured to transmit terminal information to the service server using the access information.