Described herein is a recliner regulating device comprising a locking cam, an unlocking cam with a thickness less than the locking cam, a ratchet gear, a coulisse and a return spring connected with a central shaft. The delta-contracting function allows the choice of an appropriate value of the helper data, such that any value of the cryptographic data which sufficiently resembles said original primary input value leads to the same output value. The power system includes an abutting series of tubular sections defining an airflow path with heating plates in the airflow path and variable positive voltage grids to extract charged particles from the heated air.