Mt. Gox has introduces what they are calling, perhaps aptly enough, the “one-time password (OTP)” card. This swiss made card (with a claimed battery life of 3-to-5 years to boot) is designed to add yet another layer of security to user accounts on the exchange, and acts as an alternative to Google Authenticator or Mt. Gox’s own Yubikey solution.
When used, the card will generate a code every time the user tries to log in, withdraw funds, or access their security center.
Mt. Gox says that the card is priced at $39.99 and it’s available for purchase and shipping now. You can find more information about the OTP card at the appropriate Mt.Gox help page.