| CPC G06F 21/32 (2013.01) [G06F 16/43 (2019.01); H04N 21/42204 (2013.01)] | 19 Claims |

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1. A controller comprising:
an input part that receives a content request for content information related to an image displayed on a first external device;
a control part that determines content based on the content request;
a communication part that receives data corresponding to the content from the first external device and searches for content information based on the data;
a display panel that displays a search result for the content request;
a sensor part that receives user authentication information that identifies a user; and
a memory that stores the user authentication information and an address corresponding to the user authentication information, wherein
the control part is configured to identify the address based on the user authentication information received through the sensor part and transmit the search result to the address via the communication part, wherein
the user authentication information is a bio information, and
the address comprises at least one of an email address and a mobile phone number.
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