Abstract: In one embodiment, a unique (or quasi unique) identifier can be received by an application store, or other on-line store, and the store can create a signed receipt that includes data desired from the unique identifier. This signed receipt is then transmitted to a device that is running the application obtained from the on-line store and the device can verify the receipt by deriving the unique (or quasi-unique) identifier from the signed receipt and comparing the derived identifier with the device identifier stored on the device, or the vendor identifier assigned to the application vendor.

Abstract: In one embodiment, a unique (or quasi unique) identifier can be received by an application store, or other on-line store, and the store can create a signed receipt that includes data desired from the unique identifier. This signed receipt is then transmitted to a device that is running the application obtained from the on-line store and the device can verify the receipt by deriving the unique (or quasi-unique) identifier from the signed receipt and comparing the derived identifier with the device identifier stored on the device, or the vendor identifier assigned to the application vendor.

Abstract: In one embodiment, a unique (or quasi unique) identifier can be received by an application store, or other on-line store, and the store can create a signed receipt that includes data desired from the unique identifier. This signed receipt is then transmitted to a device that is running the application obtained from the on-line store and the device can verify the receipt by deriving the unique (or quasi-unique) identifier from the signed receipt and comparing the derived identifier with the device identifier stored on the device, or the vendor identifier assigned to the application vendor.

Abstract: Improved techniques and systems for redemption of a promotional code for acquisition of a digital product, such as an in-application asset, for use in a corresponding application program are disclosed. The in-application asset can, for example, pertain to a consumable asset or a non-consumable asset. The techniques and systems can operate to validate the promotional code that is being redeemed to acquire the in-application asset, and can confirm that a requestor's redemption device has the corresponding application program installed thereon. Compatibility of the corresponding application program with the in-application asset can be confirmed. Updates to the corresponding application program can also be provided.

Abstract: In one embodiment, a unique (or quasi unique) identifier can be received by an application store, or other on-line store, and the store can create a signed receipt that includes data desired from the unique identifier. This signed receipt is then transmitted to a device that is running the application obtained from the on-line store and the device can verify the receipt by deriving the unique (or quasi-unique) identifier from the signed receipt and comparing the derived identifier with the device identifier stored on the device, or the vendor identifier assigned to the application vendor.

Abstract: A method is provided to promote the acquisition of a set of items comprising: sending requester GUI controls over a network to a requestor's electronic device; receiving from the requestor's device over the network assembly instructions for a contribution solicitation object; and sending the object and contributor GUI controls over the network to a contributor's electronic device.