Abstract: Described herein are printing inks that are safe for direct contact with food. The inks contain colorants and other substances which comply with regulations governing the amounts of substances determined to be safe in the event one or more of the ink-containing substances were to migrate into foods or beverages, The inks exhibit resistance to removal. Also described are sets of inks. The inks provide wide color gamut.

Abstract: Described herein are printing inks that are safe for direct contact with food. The inks contain colorants and other substances which comply with regulations governing the amounts of substances determined to be safe in the event one or more of the ink-containing substances were to migrate into foods or beverages, The inks exhibit resistance to removal. Also described are sets of inks. The inks provide wide color gamut.

Abstract: A method of managing access to a key. The method comprises associating the key with an encrypted data object, the key being required to decrypt the data object; generating a number of fragments of the key, the number of fragments corresponding to a number of parties subject to a fragmentation agreement; and encrypting each fragment with a public key corresponding to each of the parties. The method further comprises encrypting each encrypted fragment with a public key of a trusted party; and storing the encrypted fragments with the encrypted data object on a server of the trusted party.

Abstract: A management system and corresponding management method are described which operate by defining a system or process as a number of discreet elements; defining relationships between the elements; changing the other elements according to the defined relationships when a change is made to an element of the system or process, or a further element is added; and storing the previous version of an element when an element is changed. A history of changes is maintained which allows the history of operation of the system or process to be statically analysed.