Abstract: A device and method are provided. The device includes a controller, a memory, and a transceiver. The controller generates authentication information based on a user input to the device. The memory stores the generated authentication information. The transceiver receives authentication information, which is generated by a point of sale (POS) terminal based on a user input to the POS terminal, from the POS terminal, when the device enters within a predetermined range from the POS terminal. The controller compares the generated authentication information with the received authentication information, and provides card information which is used in a transaction with respect to an item or a service to the POS terminal based on a result of the comparison.

Abstract: Disclosed is a method for controlling an electronic device. The method for controlling an electronic device may comprise the steps of: determining whether there is an obstacle in the first direction from the electronic device; if it is determined that there is an object in the first direction, determining that the electronic device is disposed indoors; and if it is determined that there is no obstacle in the first direction, determining that the electronic device is disposed outdoors.

Abstract: A device and method are provided. The device includes a controller, a memory, and a transceiver. The controller generates authentication information based on a user input to the device. The memory stores the generated authentication information. The transceiver receives authentication information, which is generated by a point of sale (POS) terminal based on a user input to the POS terminal, from the POS terminal, when the device enters within a predetermined range from the POS terminal. The controller compares the generated authentication information with the received authentication information, and provides card information which is used in a transaction with respect to an item or a service to the POS terminal based on a result of the comparison.

Abstract: A method of acquiring and processing information on a mobile terminal is provided. The method includes: receiving, at the mobile terminal, information about at least one item displayed on an external display device from the external display device; and performing, at the mobile terminal, a function for the at least one item based on the received information.

Abstract: Disclosed is a method for controlling an electronic device. The method for controlling an electronic device may comprise the steps of: determining whether there is an obstacle in the first direction from the electronic device; if it is determined that there is an object in the first direction, determining that the electronic device is disposed indoors; and if it is determined that there is no obstacle in the first direction, determining that the electronic device is disposed outdoors.

Abstract: A method performed by a first application in a client apparatus to authenticate a second application in the client apparatus is provided. The method includes, when the first application receives an execution request from the second application, requesting authentication information of the second application from an authentication server, obtaining the authentication information of the second application from the authentication server, and authenticating the second application using the authentication information, wherein the authentication information of the second application is signed with a private key of the authentication server.

Abstract: Disclosed are a display apparatus, a mobile apparatus, a system including the same, and a connection control method thereof. The display apparatus includes: a camera configured to receive second communication interface information displayed and supported by a mobile apparatus; and a controller configured to set up a communication connection with the mobile apparatus, based on first communication interface information supported by the display apparatus and the second communication interface information displayed and supported by the mobile apparatus and received through the camera.

Abstract: Disclosed are a display apparatus, a mobile apparatus, a system including the same, and a connection control method thereof. The display apparatus includes: a camera configured to receive second communication interface information displayed and supported by a mobile apparatus; and a controller configured to set up a communication connection with the mobile apparatus, based on first communication interface information supported by the display apparatus and the second communication interface information displayed and supported by the mobile apparatus and received through the camera.

Abstract: A method performed by a first application in a client apparatus to authenticate a second application in the client apparatus is provided. The method includes, when the first application receives an execution request from the second application, requesting authentication information of the second application from an authentication server, obtaining the authentication information of the second application from the authentication server, and authenticating the second application using the authentication information, wherein the authentication information of the second application is signed with a private key of the authentication server.

Abstract: A method and system for authenticating a transaction request from a device are provided. The method includes storing authentication information that is generated by the device based on a user input to the device; and when the device approaches to within a predetermined range from the POS terminal, providing the authentication information to the POS terminal. The authentication information that is provided to the POS terminal is compared with authentication information that is generated by the POS terminal based on a user input to the POS terminal, and then is used to authenticate a transaction request from the device.

Abstract: A method of acquiring and processing information on a mobile terminal is provided. The method includes: receiving, at the mobile terminal, information about at least one item displayed on an external display device from the external display device; and performing, at the mobile terminal, a function for the at least one item based on the received information.

Abstract: A credit transaction system, apparatus, and method are capable of grading credit to other people. The credit transaction system includes a relay unit, a user terminal, and a seller terminal. The relay unit stores credit information including at least one of credit card information and account information of a credit owner, user information and terminal information on a user designated by the credit owner, and credit limit information on a limit usable by the user. The user terminal transmits the user's terminal information to a seller terminal corresponding to the seller. The seller terminal transmits billing records on the goods or service purchased by the user in response to the received user's terminal information. Here, the relay unit performs an authentication process for the user corresponding to the user terminal, and then relays to process payment regarding the billing records via the credit information within the credit limit information.