Various systems and methods for collaborative filtering of enterprise objects are described. The invention also relates to a closing means, which comprises an RFID identifier. A digital controller for controlling the interrupt operation of the switching unit according to the control data. The first reacting agent and the second reacting agent create a thermic reaction when mixed. The solar module assembly can feature internal power storage operable to charge an electronic device. The rotational motion of the roller elements is detected by detection means such as an optical encoder and this results in the generation and sending of an output signal from signal output means to a computer input.