Abstract: A radio frequency identification fob is disclosed which includes a body and a cover engaged with each other as a fob to enclose a radio frequency identification device. The body and the cover are typically molded plastic. The engagement of the cover to the body may be via an elongated alignment ridge coupled in slideable manner in an elongated mating groove substantially along the major axis of the body. The cover may be secured engaged with the cover by a fastener that could include a releasable latch engaged with a catch. The fob could further include an attachment device such as a key ring to couple the fob to other personal items.