1. NFC and Certification Number Check


Each GOA-graded card is embedded with an NFC chip which stores an uncloneable cryptographic authenticator of the card.

With an easy tap on the phone, users can easily access the grading information of a GOA-graded card. Users can also check the information by inputting the certification number manually.




2. Activity


Upon checking the record of each GOA-graded card, the app will record the users' history. Users can revisit search records through the "Activity" page