Systems (1) comprising generating devices (2) comprising sensors (21) for generating sensor signals representing orientations of the generating devices (2) are provided with comparing devices (3) comprising comparators (31) for comparing the sensor signals with reference signals for interpreting the orientations, to increase the number of possible applications. The generating devices (2) and the comparing devices (3) may form parts of one apparatus (4) or of different apparatuses and then communicate wiredly or wirelessly via radio or infrared. Reference sensors (33,52) for generating the reference signals and/or reference memories (34,53) for storing the reference signals may be located in the comparing devices (3) and/or in sources (5) and then communicate wiredly or wirelessly via radio or infrared. Further comparators (36) in the comparing devices (3) may introduce adjustable sensitivities.