Abstract: Security devices which are detachable or removably attachable are provided for keeping access means to particular spaces separate from identification means for the spaces. The devices can be removably attached to holder assemblies for the access means, e.g. a holder for a hotel room key or the like, preferably with incentives provided for the user to separate the access means from the identification means for security reasons. A business method for selling advertising for inclusion in such holder assemblies, sorting editing the resulting advertising copy, printing holder assemblies for particular facilities and distributing same to the facilities is also disclosed.