Fixing or replacing a CAC typically requires access to a RAPIDS facility, causing some practical problems. In remote locations around the world without direct Internet access or physical access to a RAPIDS facility, a CAC is rendered useless if the card expires, or if the maximum number of re-tries of the PIN is reached. Based on the regulations for CAC use, a user on TAD / TDY must visit a RAPIDS facility to replace or unlock a CAC, usually requiring travel to another geographical location or even returning to one's home location.