Client ID for RapidFS To activate your card, log in. Visit www.rapifs.com to activate your card. Rapid! Pay Card, also known as RapidFS Portal, is the most extensive pay card program that eliminates paper checks, lowers expenses, and advances efficiency with this paperless financial management. The Rapid! Pay card is a pre-paid credit card that may be used to activate your Rapid! card and access your account number at coordinate stores, which will automatically load all of the coordination retailers onto your cards.