Device supporting financial services, and integrated system therefor

An integrated system for providing virtual services that operates in a network environment, the system comprising:

• a first terminal in which an online platform supporting a virtual service is executed;
• and
• a server for operating the online platform,
• wherein the server is configured to:
• receive first user information associated with the first terminal;
• receive a position information from a kiosk associated with the first terminal;
• perform an authentication procedure on the first user of the first terminal based on the first user information, the authentication procedure comprising:
• generating a first QR code based on the first user information and the position information,
• transmitting the first QR code to the first terminal;
• receive, from the kiosk, an access authentication request to access the virtual service on the first terminal based on the kiosk reading the first QR code from the first terminal;
• generate a second QR code based on a current location of the first terminal;
• transmit the second QR code to the kiosk and the first terminal;
• receive, from the kiosk, a comparison result of comparing a first overlay QR code and a second overlay QR code, the first overlay QR code being generated by the kiosk and the second overlay QR code being generated by the first terminal;
• transmit, to the first terminal, information for providing the virtual service on the first terminal, based on the comparison result.