Abstract: A communication device includes: a first communication unit that performs communication with another communication device using a first communication scheme that enables communication in a first range. The first communication unit performs, when having determined that the other communication device received transmitted certain information, communication with the other communication device in a second range that is different from the first range and in which the other communication device is capable of receiving the certain information. The communication device relays communication from the other communication device to another device disposed outside the second range.

Abstract: A communication device includes a first communication unit configured to execute radio communication by using a first communication method, the first communication method allowing the radio communication to be executed within a first communication range; a second communication unit configured to execute radio communication by using a second communication method, the second communication method allowing the radio communication to be executed within a second communication range; and a permission processing unit configured to generate communication permission information to permit executing the radio communication by the first communication method, wherein the second communication unit is configured to receive setting information for establishing the radio communication by the first communication method, and wherein the first communication unit is configured to execute the radio communication by using the first communication method with another communication device that receives the setting information and the c

Abstract: A communication device includes: a first communication unit that performs communication with another communication device using a first communication scheme that enables communication in a first range. The first communication unit performs, when having determined that the other communication device received transmitted certain information, communication with the other communication device in a second range that is different from the first range and in which the other communication device is capable of receiving the certain information. The communication device relays communication from the other communication device to another device disposed outside the second range.

Abstract: A communication device includes: a first communication unit that performs wireless communication through a first communication scheme; a second communication unit that performs wireless communication through a second communication scheme in a second communication range; and a connecting module configured to establish a communication connection that forms an external network. The second communication unit transmits setup information for establishing a communication line through the first communication scheme. The first communication unit performs wireless communication through the first communication scheme with another communication device that has received the setup information. The connecting module forms an exclusive external network to establish a communication connection with an external device disposed in a communication system that exists at a physically different place.

Abstract: A communication device includes: a communication unit that performs communication with another communication device in a first range through a first communication scheme; and a detecting unit that detects prescribed information within a second range different from the first range. When the detecting unit detects the prescribed information, the communication unit performs communication with the other communication device within the second range through the first communication scheme.

Abstract: A communication device includes a first communication unit to execute radio communication by a first communication scheme allowing execution of the radio communication within a first communication range; a second communication unit to execute radio communication by using a second communication scheme allowing execution of the radio communication within a second communication range; a setting information retrieval unit to obtain, upon detecting that the communication device is within a predetermined area, setting information for establishing the radio communication by the first communication scheme; and a disconnection processing unit to disconnect radio communication with another communication device, wherein the first communication unit executes radio communication with the other communication device that obtains the setting information, and wherein, upon detecting that the communication device is not located within the second communication range, the disconnection processing unit disconnects the radio commu

Abstract: A communication device includes a first communication unit configured to execute radio communication by using a first communication method, the first communication method allowing the radio communication to be executed within a first communication range; a second communication unit configured to execute radio communication by using a second communication method, the second communication method allowing the radio communication to be executed within a second communication range; and a permission processing unit configured to generate communication permission information to permit executing the radio communication by the first communication method, wherein the second communication unit is configured to receive setting information for establishing the radio communication by the first communication method, and wherein the first communication unit is configured to execute the radio communication by using the first communication method with another communication device that receives the setting information and the c

Abstract: A wireless communication system includes a plurality of transmitters each configured to transmit transmission information including a code and an identifier of the corresponding transmitter, and a plurality of terminals configured to wirelessly communicate with each other. Each of the terminals includes an obtaining unit that obtains codes extracted from multiple sets of the transmission information transmitted from the transmitters, and a communication unit that performs encrypted communications with other terminals using the obtained codes.

Abstract: In a network device which provides a predetermined network service according to a request of a user, an IP-address generating unit is configured to generate an IP address from a value having an association with the network service, the IP address indicating an objective association with the network service. A service provision unit is configured to set up the generated IP address for the network device to provide the network service using the generated IP address.

Abstract: A communication apparatus that is connected to an information processing apparatus is provided. The communication apparatus includes: an information processing apparatus discovery unit configured to discover the information processing apparatus; a secure communication packet conversion unit configured to convert a non-secure communication packet transmitted by the discovered information processing apparatus into a secure communication packet; and a non-secure communication packet conversion unit configured to convert the secure communication packet destined for the information processing apparatus into the non-secure communication packet.

Abstract: In a network device which provides a predetermined network service according to a request of a user, an IP-address generating unit is configured to generate an IP address from a value having an association with the network service, the IP address indicating an objective association with the network service. A service provision unit is configured to set up the generated IP address for the network device to provide the network service using the generated IP address.

Abstract: In a network device, a user-interface unit creates a user interface including an address input part to which an address or an address range is inputted, an allow/deny selection part to which a choice of whether access to the network device from an external device, corresponding to the address or the address range inputted to the address input part, is allowed or denied is inputted, and a switch part to which a choice of whether an address portion corresponding to a varying part of a prefix received from a network is ignored is inputted. A packet-filtering unit determines allowance or denial of reception of an incoming packet according to the choice inputted by a user through the user interface.

Abstract: A communication apparatus that is connected to an information processing apparatus is provided. The communication apparatus includes: an information processing apparatus discovery unit configured to discover the information processing apparatus; a secure communication packet conversion unit configured to convert a non-secure communication packet transmitted by the discovered information processing apparatus into a secure communication packet; and a non-secure communication packet conversion unit configured to convert the secure communication packet destined for the information processing apparatus into the non-secure communication packet.