1. A device for identifying and connecting to a data resource in a data store, comprising: a machine-readable label reader; a controller connected to control said reader and to connectable to read at least selected ones of said data resources; said controller being programmed generate a query for use in identifying said at least selected ones of said data resources, said query containing a first identifier of an object associated with said reader and a second identifier of an object associated with a machine-readable label, said query being usable to identify said at least selected ones responsively to both said identifier of said reader and said identifier of said machine-readable label.