Abstract: A method for coding an access to a computer resource comprises, in a physical representation of a code, first information encoded with a first coding type corresponding to an access path and to an identification of said computer resource, and fit to be decoded by a reader, wherein said physical representation further comprises conditional validity information encoded with a second coding type corresponding to a condition of validity of an access to said computer resource, with said conditional validity information fit to be decoded by an application installed in one element of the network including the reader of the physical representation, one or more gateway(s) and the server hosting said computer resource.

Abstract: An optical-reading code preparation device includes: a storage unit able to receive data to be coded, and parameter data including presentation data, an encoding unit, able to produce code data on the basis of data to be coded and of parameter data, an imaging unit, able to produce data defining an image plane on the basis of presentation data and/or of code data, a scheduler devised so as to, in response to the receipt of data to be coded and of parameter data comprising presentation data: call the encoding unit with the data to be coded and the parameter data received so as to produce associated code data, call the imaging unit with the associated code data, selectively with some at least of the presentation data, call the imaging unit, and prepare an optical-reading code.

Abstract: An optical-reading code preparation device includes: a storage unit able to receive data to be coded, and parameter data including presentation data, an encoding unit, able to produce code data on the basis of data to be coded and of parameter data, an imaging unit, able to produce data defining an image plane on the basis of presentation data and/or of code data, a scheduler devised so as to, in response to the receipt of data to be coded and of parameter data comprising presentation data: call the encoding unit with the data to be coded and the parameter data received so as to produce associated code data, call the imaging unit with the associated code data, selectively with some at least of the presentation data, call the imaging unit, and prepare an optical-reading code.

Abstract: An optical-reading code preparation device includes: a storage unit able to receive data to be coded, and parameter data including presentation data, an encoding unit, able to produce code data on the basis of data to be coded and of parameter data, an imaging unit, able to produce data defining an image plane on the basis of presentation data and/or of code data, a scheduler devised so as to, in response to the receipt of data to be coded and of parameter data comprising presentation data: call the encoding unit with the data to be coded and the parameter data received so as to produce associated code data, call the imaging unit with the associated code data, selectively with some at least of the presentation data, call the imaging unit, and prepare an optical-reading code.