Combination mechanism

A combination device, comprising

• a case to enclose the device,
• a single source of light inside the case,
• an optical receptor inside the case in line with, but separate from, the single source of light,
• a locking means operated by the optical receptor,
• a series of barriers positioned between the optical receptor and single source of light,
• an open space on each barrier,
• catch bars which, when in contact with each other, provide resistance in only one direction, and allow objects to pass by unaffected in all other directions,
• a series of such catch bars, which all provide resistance in a manner that allows them to interact with each other appropriately, with one catch bar of the series placed on each barrier,
• multiple such series of catch bars placed on the barriers, each with differing resistance patterns so that only the appropriate catch bars in a series will interact with each other and allow all other catch bars from other series to pass by unaffected,
• a means of manipulating the barriers, in series, to align their open spaces,
• a combination which is derived from the position of each catch bar of a series on each barrier in relation to each barrier's open space,
• multiple simultaneous, unique combinations derived from the multiple series of catch bars on the barriers.