Abstract: The present invention relates to a method in connection with SCUBA diving to control a diver's buoyancy, in which method the diver (11) is equipped with diving equipment comprising at least one air pressure tank (1), a valve device (2) connected to the pressure tank (1) and arranged to supply air from said pressure tank via first supply means (5) to a breathing regulator (4) and via second supply means (7) to an inflatable diving jacket (6) in order to control the diver's buoyancy, inflation of the diving jacket being initiated when the diver has not affected the air flow through the breathing regulator (4) for a certain time period. The invention also relates to a safety device and diving equipment.

Abstract: The present invention relates to a method in connection with SCUBA diving to control a diver's buoyancy, in which method the diver (11) is equipped with diving equipment comprising at least one air pressure tank (1), a valve device (2) connected to the pressure tank (1) and arranged to supply air from said pressure tank via first supply means (5) to a breathing regulator (4) and via second supply means (7) to an inflatable diving jacket (6) in order to control the diver's buoyancy, inflation of the diving jacket being initiated when the diver has not affected the air flow through the breathing regulator (4) for a certain time period. The invention also relates to a safety device and diving equipment.

Abstract: The present invention relates to a method for handling of a plurality of bank notes comprising the following steps: a) collecting said plurality of bank notes (1) at a location of commerce (2), b) safe-keeping said bank notes (1), wherein the method also comprises c) registering each one of said bank notes (1) by use of an identity code (3) of each bank note (1), in connection with, or subsequent to, collecting said bank notes (1), d) registering and designating said banknotes (1) as being invalid, to minimise the risk of theft of said bank notes (1). The invention also comprises a system for handling of a plurality of bank notes according to the method of the invention.