모바일회원증 HCard is a smartphone mobile membership card solution designed for library users. To use this solution, users need to apply for a mobile membership card on the public library or institution's website. Once the application is approved, users will receive an SMS with the app information and authentication code. After installing the app, users can authenticate themselves using the provided code.

It is important to note that the authentication code is valid for 24 hours from the time of application. If users change their smartphone device or uninstall the app, they can request a reissue of the mobile membership card from the issuing institution.

The app offers both security and convenience. Users can select their respective library from the app, allowing them to easily access their mobile membership card. The QR code system used in the app ensures that unauthorized usage, such as screen capture or camera capture, is prevented through the application of hash function algorithm and time-based encryption logic.

Developer: 주식회사 호디