Administration of keyboard input in a computer having a display device supporting a graphical user interface, including storing keyboard input intended by a user for a second widget when keyboard focus is on a first widget, wherein the first widget receives no keyboard input; changing keyboard focus to the second widget; and providing the stored keyboard input to the second widget. Credentials for authorizing a principal are obtained by the client computer from a validation center. The allocated cache section of the cache can be varied by selecting an appropriate map function. A series of suction cups removes the blank capsules from the magazines and passes them to another series of suction cups located inside sealing heads of the main carousel. The invention is particularly applicable to implementation as a backplane connecting intercommunicating printed wiring boards having interfaces such as the IEEE 802.