Abstract: A method of and a system for warning about an unauthorized object attached to a bottom part of the vehicle includes storing images of vehicles or the data corresponding to the images in server means, examining a bottom of a vehicle by image producing means, transmitting from the image producing means an image of a bottom of a vehicle or the data corresponding to the images to the server means, comparing the transmitted images of the bottom of the vehicle or the data corresponding to the images with a stored image of a bottom of a corresponding vehicle or the data corresponding to the images, and producing a signal indicative of whether the bottom of the examined vehicle contains an unauthorized object or does not contain an unauthorized object.

Abstract: In a telecommunication system, in addition to regular telecommunications between communication devices customers in which they disclose their identities to one another, any customer can automatically introduce a greeting without disclosing his/her identity and hear greetings of other customers without disclosing their identities in order to make contacts therebetween, to arrange meetings, to schedule dating, etc., and also subsequently a live voice conversation between the customers, an exchange of still images between the customers, and an exchange of moving images between the customers is provided as well.

Abstract: A system of advertising has a source of advertising information adapted to transmit advertising information of different contents substantially corresponding to objects to be advertised situated in different advertising zones and formed as a server unit, a plurality of moving vehicles, each of the vehicle being provided with a receiver for receiving the advertising information of different contents, each of the vehicles being provided with further unit for receiving a signal, which does not contain a geographical information, each of the vehicles being provided with a display for displaying advertising information, and the server unit determining a zone in which the vehicle is located and therefore a geographic information and to transmit to the further receiving unit of the vehicle the signal does not contain the geographic information without transmitting the geographical information, while the receiver in each of the vehicle is formed so as to select in a vehicle based on the signal and to display an adver

Abstract: A method of and a system for warning about an unauthorized object attached to a bottom part of the vehicle includes storing images of vehicles or the data corresponding to the images in server means, examining a bottom of a vehicle by image producing means, transmitting from the image producing means an image of a bottom of a vehicle or the data corresponding to the images to the server means, comparing the transmitted images of the bottom of the vehicle or the data corresponding to the images with a stored image of a bottom of a corresponding vehicle or the data corresponding to the images, and producing a signal indicative of whether the bottom of the examined vehicle contains an unauthorized object or does not contain an unauthorized object.

Abstract: A system of advertising has a source of advertising information adapted to transmit advertising information of different contents substantially corresponding to objects to be advertised situated in different advertising zones and formed as a server means, a plurality of moving vehicles, each of the vehicles being provided with a receiver for receiving the advertising informations of different contents, each of the vehicles being provided with further means for receiving a signal, which does not contain a geographical information, each of the vehicles being provided with a display for displaying advertising information, and the server means being formed so as to determine a zone in which the vehicle is located and therefore a geographic information and to transmit to the further receiving means of the vehicle the signal which does not contain the geographic information without transmitting the geographical information, while the receiver in each of the vehicles is formed so as to select in a vehicle based on t