Abstract: There is provided a system for social interactions between users. The system may include a plurality of network nodes connected in a network, each node comprising a representation of at least one assigned user. The exemplary system comprises a first node assigned to a first user, the first node being adapted to generate an activity upon an execution of an action of the first user with a data object in interaction with the first node. The activity may describe the action in a predetermined format and may include a representation of the data object. The first node may be further adapted to link the activity to at least one second user and to communicate the activity to at least one second node to which the second user is assigned.

Abstract: There is provided a system for social interactions between users. The system may include a plurality of network nodes connected in a network, each node comprising a representation of at least one assigned user. The exemplary system comprises a first node assigned to a first user, the first node being adapted to generate an activity upon an execution of an action of the first user with a data object in interaction with the first node. The activity may describe the action in a predetermined format and may include a representation of the data object. The first node may be further adapted to link the activity to at least one second user and to communicate the activity to at least one second node to which the second user is assigned.

Abstract: There is provided a method for providing a question to a user of a mobile communication device connected to a mobile communication network. An exemplary method comprises receiving a command in the mobile communication device via the mobile communication network, the command specifying a question to be presented to the user of the mobile communication device. The exemplary method also comprises passing the command to an application of the mobile communication device, the application controlling the mobile communication device to present the question to the user within a standard graphical environment provided by the mobile communication device. The exemplary method additionally comprises receiving a user input via the application, the user input being made at the mobile communication device in connection with the presentation of the question.

Abstract: There is provided a method for providing a tag-based service. The exemplary method comprises registering in a broker server an allocation between at least one application server and a tag. An identification code included in the tag is read using a reader device. The identification code may be transmitted from the reader device to the broker server via a communication network. The exemplary method also comprises determining, in the broker server, the application server using the allocation. The exemplary method additionally comprises sending from the broker server to the application server a notification that the tag has been read. The exemplary further comprises executing a predetermined action in response to a receipt of the notification in the application server.

Abstract: There is provided a mobile communication device. An exemplary mobile communication device comprises an operating system for the mobile communication device and a radio interface for connecting to a wireless network. The exemplary mobile communication device also comprises a display on which a graphical user interface is displayed to enable the user to operate the mobile communication device according to the operating system. The exemplary mobile communication device additionally comprises a local storage where data files associated with the graphical user interface are stored and a graphical user interface manager that enables the download of a new graphical user interface from a remote device.

Abstract: There is provided a mobile communication device. An exemplary mobile communication device comprises an operating system for the mobile communication device and a radio interface for connecting to a wireless network. The exemplary mobile communication device also comprises a display on which a graphical user interface is displayed to enable the user to operate the mobile communication device according to the operating system. The exemplary mobile communication device additionally comprises a local storage where the data files associated with the graphical user interface are stored wherein the local storage permits the storage of a plurality of user interfaces and a manager that manages the graphical user interface such that the user can select one out of the plurality of stored graphical user interfaces.

Abstract: In a distributed sensor network, a method of key management is carried out in several phases, particularly key pre-distribution phase, shared key discovery phase, and as needed, a path key establishment phase. In the key pre-distribution phase, prior to DSN deployment, a ring of keys is distributed to each sensor node, each key ring consisting of randomly chosen keys from a large pool of keys which is generated off-line. A shared key exists between each two key rings with a predetermined probability. In the shared key discovery phase, which takes place upon deployment of the DSN, every sensor node discovers its neighbors in wireless communication range with which it shares keys, and the topology of the sensor array is established by forming secure communication links between respective sensor nodes.

Abstract: In a distributed sensor network, a method of key management is carried out in several phases, particularly key pre-distribution phase, shared key discovery phase, and as needed, a path key establishment phase. In the key pre-distribution phase, prior to DSN deployment, a ring of keys is distributed to each sensor node, each key ring consisting of randomly chosen keys from a large pool of keys which is generated off-line. A shared key exists between each two key rings with a predetermined probability. In the shared key discovery phase, which takes place upon deployment of the DSN, every sensor node discovers its neighbors in wireless communication range with which it shares keys, and the topology of the sensor array is established by forming secure communication links between respective sensor nodes.