Cardova is a Japanese trading-card service operated by Tokyo TCG Exchange Co., Ltd. It helps collectors securely store professionally graded cards and manage them online through a digital vault. Members can buy and sell cards through auctions, trade with other users, and share information within the community. The service includes live trading and auction features, tools for managing personal trades and listings, and options for sending cards to the vault or arranging purchases. Cardova is designed to let users enjoy collecting while exploring trading and investment opportunities related to their cards.

The company also provides user guides, fee information, customer support, and details about its safety initiatives and compensation program. Cardova says it works to prevent the forgery of cards and grading results. It is operated by Tokyo TCG Exchange Co., Ltd., which lists offices in Tokyo and holds a secondhand dealer permit issued by the Tokyo Metropolitan Public Safety Commission. Cardova states that neither it nor its operator has a capital relationship or business partnership with PSA.