Abstract: A supervisory communication system serving callers with restricted freedom, connected to a local telephone exchange and to a local computer network comprising a data base storing relevant data concerning each possible caller, wherein the system comprises: a plurality of call units (11) arranged to be accessible for the callers and each comprises a handset (12) for carrying out calls, a personal identification means for identifying any caller; and a camera (13) enabling observation of the callers; a switching unit (19) coupled to each of the call units (11); a communication server (40) having a memory (50) and connected to the switching unit (19); supervising terminals (41) arranged at appropriate locations being served by supervisory personnel, each of them has a display screen (42) with multiple fields (43 to 45), a loudspeaker (46), a microphone (48) and a keyboard (47); the communication server (40) is connected to a local network for selectively receiving information from the data base concerning t

Abstract: An inflatable emergency flotation device to be worn around the neck of the wearer and strapped to the front of the wearer's body. The device includes a folded, flexible, airtight tube; a strap which is slidably attached to the ends of the tube; an oral inflation tube; and an inflation assembly including a holder for holding a carbon dioxide cylinder and a hand operated or automatic activating mechanism.