For storing controlled medicines (dangerous drugs), what additional security and record-keeping measures are required beyond a locked poison cupboard?

Storage of drugs controlled under the Dangerous Drugs Ordinance (Cap. 134) (for example, certain potent analgesics) is subject to stricter security and record-keeping requirements than ordinary poisons. First, the storage facility must be a fixed, robust safe or vault; an ordinary locked cabinet is not sufficient. The safe must be secured to the building structure so that it cannot easily be removed as a whole. Second, access to and handling of these drugs must be very strictly controlled, usually through a dual-person, dual-lock or similar system, under which two authorised persons must be present for each operation. Third, and most importantly, a dedicated Dangerous Drugs Register must be maintained. Every receipt and issue must be recorded promptly and accurately, including the date, source or destination, quantity and signatures of the persons handling the transaction. The register must follow the prescribed statutory format and must not be altered.