A group definition is received via a network interface. Communications are transmitted to destinations, the communications comprising an invitation to associate with the a content sharing group. Authentication data associated with users that accept the invention is encrypted. The accepting users are associated with the content sharing group. A content gallery definition is received. A communication is received that the content gallery is to be shared with the content sharing group. The content gallery is caused to be instantiated on devices of users associated with the group. A content request for the content sharing group is received and the content request is transmitted accordingly to users associated with the group. A content item is received in response the request and the content item is transmitted to user devices associated with the group and enabled to appear in instantiations of the content gallery on the user devices.

A database processing system is disclosed for accessing databases and updated data items and triggering event notifications. The data processing system may comprise a records database including a plurality of data records, and a triggers database including a plurality of trigger indicators. The database system may further include a hardware processor that can execute computer-executable instructions in order to: receive an update on a data record, identify a type of change corresponding to change in the data record, cause an update to the records database based on information included with the updated data record, identify a trigger corresponding to the type of update to the data record, and generate an event notification including information included in the update.

A system that facilitates sharing of multimedia content includes a user interface, network circuitry; and one or more processors. The processors perform operations that include displaying, via the user interface, a list of one or more media playback devices available to be added to a social networking group. A selection of first and second media playback devices to be associated with a particular social networking group is received via the user interface. The first media playback device is associated with a first playback queue that specifies a first set of media items associated with first media content that can be streamed from a first streaming service to the first media playback device. An indication to the social networking system that specifies the selection of the first and second media playback devices to be associated with the group is communicated via the network circuitry. In response, the social networking system communicates second media content items associated with the first media content items to a second playback queue associated with the second media playback device. The second playback items facilitate streaming of second media content associated with the first media content from a second streaming service to the second media playback device.

A system and method of coordinated motion among heterogeneous devices includes a medical device with one or more movable elements and one or more processors. Any of the processors uses a shared interface to access services. The medical device requests a movement token from a token service through the shared interface, receive the movement token from the token service, exchange configuration data, kinematic data, or planned motion data through the shared interface, plan a first motion for a first movable element of the movable elements based on the movement token and the configuration data, the kinematic data, or the planned motion data, and execute the first motion. In some embodiments, the movement token is selected from a group consisting of an exclusive-motion token, a master follow-me token, a slave follow-me token, a master collision-avoidance token, a slave collision-avoidance token, and a passive collision-avoidance token.

An Internet of Things (IoT) network includes an IoT device with a communicator to send a communication including egress frame, protocol library builder to determine available protocols, frame analyzer to analyze an ingress frame, and frame builder to build the egress frame from the ingress frame. An IoT network includes an IoT device with network discoverer to identify available parallel communication channels between IoT device and target device, payload, payload fragmenter/packager to fragment the payload into sub-objects for transmission, and packet communicator to send sub-objects to the target device over parallel communication channels. An IoT network includes a plurality of IoT devices, which each include a communication channel to an upstream device, a network link to another one of the plurality of IoT devices, a hash calculator to identify a neighbor IoT device, and a communicator to send out a message to the neighbor IoT device.

An electronic apparatus is provided. The electronic apparatus according to an exemplary embodiment includes a communicator, a storage, a display, and a processor configured to: based on a connection request signal being received from a user terminal device through the communicator, control to store in the storage a first image output through the display, based on a second image being received from the user terminal device through the communicator, identify a first object included in the stored first image that is same as second object included in the received second image, and based on a determination that a first feature of the first object is same as a second feature of the second object, control the communicator to transmit authentication information corresponding to the connection request signal to the user terminal device.

Disclosed is a sharding block chain generation method based on a tree structure. Method comprises: dividing a server system into at least one group, and respectively selecting a leader of each group; packaging to generate at least one block by leader according to an own local database state, and broadcasting at least one block to all members of group in which leader is located; verifying consistency of at least one block, executing block according to a verification result of consistency, and synchronizing block to other groups. According to method, by means of tree grouping architecture, efficiency of generating block by a block chain framework is improved, block is generated according to own local database state of the leader, a resource waste phenomenon when block is generated in system is reduced, and delay when the block is generated is reduced.

Computer-readable media, method, and system for inviting a plurality of users to a group-based communication channel within a group-based communication system. The plurality of users are invited by transmitting a respective plurality of invitations to the users upon a sending user instruction. The outcome of a user accepting an invitation may be determined based on an approval privilege of the user and a status of the group-based communication channel.

An forum facilitator device is provided that allows for a controlled environment to provide a secure forum for residents to provide communications to other registered users of the secure forum. The communications are provided through posts made in the secure forum and through other types of communications from the inmate such as but not limited to emails and text messages. The forum facilitator device operates the secure forum and implements rules to control what is posted on the secure forum, who is able to access the secure forum, and what entities are allowed to view and interact with residents of the controlled environment.

Example implementations relate to a domain join. An example controller can remotely configure and authenticate a computing device within a computing network to join a domain. In response to the configuration and authentication, the controller can record to the computing device that the domain join has been requested but not fulfilled. The computing device can be joined to the domain based on the domain join request record and in response to a restart of the computing device and receipt of domain credentials at the computing device.