Abstract: Techniques are described for linked blockchains that allow computing devices to access information from an acceptance blockchain about acceptance reports stored in an enterprise delivery blockchain that are also linked to a product blockchain that stores information of the products of the acceptance reports. An acceptance report is indicative of operability of a product in a service provided by a service provider. A processor is configured to access the block in the enterprise delivery blockchain, retrieve the acceptance report from the block in the enterprise delivery blockchain, determine an identifier, identified in the block in the enterprise delivery blockchain, to a block in an acceptance blockchain, access the block in the acceptance blockchain via the determined identifier, retrieve from the block in the acceptance blockchain contextual information of the acceptance report, and output the acceptance report and contextual information of the acceptance report.

Abstract: A cellular telephone holster is provided. The holster is formed of walls defining a cavity to hold the cellular telephone. The holster may be attached to a user's belt, pants, other article of clothing, or accessory. A spacing is defined by one of the walls, preferably a front wall. This spacing extends from one end of the wall to the other. In operation, a user may pass a finger through the spacing to access a cellular telephone or other device stored therein, and by drawing the finger through the length of the spacing, easily remove the cellular telephone.