Abstract: In some examples, a mobile device registers an account of a first service with an account control service, the account control service separate from the first service. In response to the mobile device being authorized with respect to the account control service, the mobile device searches for a target device that is within a communication range of the mobile device. The mobile device transmits, to the target device found in the search, a credential of the account of the first service being accessed by the target device over a network.

Abstract: In one example, a topographic build plate for an additive manufacturing system. The build plate is to support a 3D object fabricated layer-by-layer, and is divided into plural blocks each having a build surface. In-between fabrication of layers of the object, a first one of the blocks is offset in a Z-direction from a second one of the blocks to position the build surfaces of the first and second blocks at different Z-direction locations to replace at least a portion of a support structure of the 3D object.

Abstract: In some examples, a system receives a request for digital content that is responsive to a capture of an image of a mark, receives information relating to a captured image of a user, and in response to the request, identifies, from a plurality of different digital content items associated with the mark, a first digital content item, the first digital content item identified responsive to a characteristic of the user determined based on the captured image of the user, and the plurality of digital content items associated with respective different characteristics of users. The system communicates the identified first digital content item to output, by an output device, information based on the identified first digital content item.

Abstract: In some examples, a mobile device registers an account of a first service with an account control service, the account control service separate from the first service. In response to the mobile device being authorized with respect to the account control service, the mobile device searches for a target device that is within a communication range of the mobile device. The mobile device transmits, to the target device found in the search, a credential of the account of the first service being accessed by the target device over a network.