Abstract: A package for an optical storage medium, comprising first and second parts; a window located in the first part; a third part sandwiched in a region between the first and second parts; wherein the first, second and third parts define a receptacle in a further region where the third part is not sandwiched between the first and second parts; wherein the window and the third part are arranged such that when the optical storage medium is placed in the receptacle, the optical storage medium abuts the third part and a predefined area of the optical storage medium is perceptible through the window.

Abstract: Method for tracking a sales channel of a merchandise item, comprising: storing an item identifier of said merchandise item on a data carrier; storing in a data base said item identifier together with an associated sales channel identifier; selling said merchandise item together with said data carrier to a customer; reading at a customer's location said item identifier from said data carrier; transmitting said item identifier together with a location identifier to said registration data base; identifying said item identifier in said data base; and comparing said location identifier with said associated sales channel identifier.

Abstract: A package for an optical storage medium, comprising first and second parts; a window located in the first part; a third part sandwiched in a region between the first and second parts; wherein the first, second and third parts define a receptacle in a further region where the third part is not sandwiched between the first and second parts; wherein the window and the third part are arranged such that when the optical storage medium is placed in the receptacle, the optical storage medium abuts the third part and a predefined area of the optical storage medium is perceptible through the window.

Abstract: A method for controlling access to content on a data carrier includes reading a first and a second machine readable key stored on the data carrier. Further, a third key is retrieved from a remote server based on the first key. Access to the content on the data carrier is allowed only if the second key matches the third key.

Abstract: Method for tracking a sales channel of a merchandise item, comprising: storing an item identifier of said merchandise item on a data carrier; storing in a data base said item identifier together with an associated sales channel identifier; selling said merchandise item together with said data carrier to a customer; reading at a customer's location said item identifier from said data carrier; transmitting said item identifier together with a location identifier to said registration data base; identifying said item identifier in said data base; and comparing said location identifier with said associated sales channel identifier.

Abstract: In an access control device (1) having a reader that actuates a person singling device when reading a valid data carrier, a formed body (16) is put over the reader housing (4), said body being provided with a recess (17) for that purpose.

Abstract: In an access control device (1) having a reader that actuates a person singling device when reading a valid data carrier, a formed body (16) is put over the reader housing (4), said body being provided with a recess (17) for that purpose.