An apparatus is provided that includes a housing, a display, a communication interface, a processor, and a plurality of detection components each of which is located proximate a respective face of the housing. At least two of the faces of the housing proximate to which two of the respective detection components are located are adjoining faces lying in planes that cut one another, the apparatus thereby supporting a two-dimensional arrangement of apparatuses. The apparatus and other apparatuses may be formed into an arranged group of apparatuses, and in such instances, the processor is configured to receive corresponding indications from the detection components, and data from the other apparatuses in the group via the communication interface. The processor is configured to calculate an output as a function of the number of apparatuses and their arrangement, and configured to communicate the calculated output via the display.