Patent ID: 11972435
Assignee: DOOBITNARAESOFT CO., LTD.
Field: IT methods for management (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. An information transmission and reception method using a QR code, the information transmission and reception method comprising:
transmitting a first QR code comprising identification information of a second terminal;
receiving first code information, the first code information being information obtained by encoding encryption information of a first terminal using encryption information of the second terminal based on the first QR code;
decoding the first code information using decryption information of the second terminal to acquire the encryption information of the first terminal;
encoding information data using the encryption information of the first terminal to create encoded information data;
creating a second QR code based on the encoded information data;
transmitting the second QR code to the first terminal;
encoding the information data using the encryption information of the second terminal and transmitting the encoded information data to a server; and
receiving determination information from the server, wherein
the determination information is determination information as to whether the information data transmitted from the first terminal to the server and the information data transmitted from the second terminal to the server are identical to each other, and
the receiving determination information from the server comprises:
decoding, by the server, the information data received from the first terminal using the decryption information of the second terminal; and
decoding, by the server, the information data received from the second terminal using the decryption information of the second terminal.