Abstract: A method of controlling one or more light sources for preventing unauthorized intrusion or/and staying within an area outdoors or indoors, for example in a building, in a portion of a building, in a vehicle or in a craft, wherein the light source or light sources are controlled in such manner that one or more of the following characteristics of the light are altered, viz. the intensity of the light, the wavelength of the light, the frequency at which the light source or light sources are switched on and the time during which the light source or light sources are on. The invention also comprises a corresponding apparatus.

Abstract: A locating unit intended to be applied to an object and including a transmitter and a receiver of identifying radio frequency search signals, further comprising means by which it can function as a searcher, including a device for selecting objects to be located and for activating a search signal, also further comprising means by which it can function as an indicator, including a device for emitting an indicating signal at the reception of a search signal emitted by a second locating unit, cooperating with said first locating unit.

Abstract: The following observation shows that antigens or epitopes associated with impaired cellular peptide processing, especially MHC class I dependent, especially antigens associated with impaired TAP-function, can be used for immunization against cancer or as a virus vaccine.