There is provide a computing system configured to receive an object identifier and contextual information from an end-user, to compute the object identifier and contextual information based on pre-defined set of rules, to map said object identifier and contextual information to an entry point associated with a specific computer application among a plurality of applications, and to provide access to said specific computer application to said end-user. There is also provided a method to do the same, and a tag for use with a physical object, the tag comprising a redirection identifier embodying a unique identifier of the object and an HTTP address of a server permitting to redirect or provide access to the user to a specific computer application about the object.