Abstract: A method and system facilitating multiple independent extensions of a concept taxonomy. Separate classification operations determine how one or more distinct sets of additional concepts, each comprising an extension, fit in with the original taxonomy while leaving the original taxonomy intact and substantially without copying it. Classification results are recorded so that the original taxonomy and every extension thereof can be independently queried and retrieved on demand. This process is referred to as modular classification.

Abstract: The invention relates to a device for preventing a portable object from being removed from a support. The device of the invention comprises a pair of members each formed with an attachment base having an adhesive securing surface facing one direction and with at least one connecting arm projecting from the base in an opposite direction, the members being adapted to interconnect the object and the support through the connecting arms with one member having its attachment base adhesively secured to the object and the other member having its attachment base adhesively secured to the support and the connecting arms extending in side-by-side relationship. The device further includes tamper-proof fastening means for coupling together the connecting arms whereby to securely connect the object to the support.