Samsung Electronics Co., Ltd.

Suman Shekhar

Aloknath De

Rahul Agrawal

Pratik Verma

Sai Anirudh Kondaveeti

An electronic device is provided. The electronic device includes a memory, a communication circuitry, and a processor configured to transmit, a first signal for requesting to access an external device, to the external device, receive, a second signal for requesting to provide a token stored in the electronic device, from the external device, the token being generated based on at least part of a block chain including at least one block that is respectively associated with at least one external device that has been accessed by the electronic device, in response to the reception, transmit, information on the token, to the external device, receive, a third signal indicating allowed the access, from the external device, the third signal being transmitted from the external device in response to identifying, by the external device, to validate the token in all of the plurality of external devices, and access the external device based on the third signal.

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Sitamarhi, India

Suman Shekhar