Abstract: The process permits virtual interaction between a user, and a data support, and generates in an electronic box a sequence of digits arranged according to a pseudorandom logic by the expedient of a pseudorandom generator. The user introduces into the electronic box by the expedient of a data input element a succession of data representative of the user's choices and replies to a test suggesting replies proposed by the data support. The succession of user data is transformed in a succession of digits interpretable in relation to the sequence of digits coming from the generator and the successions thus obtained are interpreted in relation to each other. The process reproduces at the electronic box the result of this comparison in the form of sensory signals.

Abstract: A self-contained detector device for educational or amusement purposes cooperates with conducting and non-conducting zones of a carrier. The detector is in the form of an elongated hollow body with a reading or detecting head projecting from one end. The head is rigidly mounted on a printed circuit board that travels slidably in the hollow body. When the detector is in use on the carrier, pressure causes the head and board to slide up into the body and close a spring switch, energizing a detecting circuit on the board and coupled to the head. The head can favorably be formed as a stack of alternate conducting and non-conducting sheets. The non-conducting sheets can be of an elastomer.