Abstract: A method for providing a graphic object based on a display mode, may include receiving the graphic object, displaying the graphic object on a display of the user terminal, detecting a change of the display mode of the user terminal from a first display mode to a second display mode, and in response to detecting the change of the display mode of the user terminal from the first display mode to the second display mode, changing a color of at least a portion of the graphic object.

Abstract: Disclosed are methods, systems, and non-transitory computer-readable record mediums for providing a chatroom in a three-dimensional (3D) form. A chatroom display method including recognizing a screen switch event for a chatroom displayed on the electronic device, switching a screen to display the chatroom in a form of a 3D space in response to the screen switch event, and representing a distance between a user of the electronic device and a chat partner included in the chatroom as depth information of the 3D space based on location information of the electronic device and location information of at least one chat partner may be provided.

Abstract: Disclosed is a method, computer device, and non-transitory computer-readable record medium for managing content of a user account. A content management method including analyzing a use pattern for each account for a plurality of accounts used by a user, determining whether a user activity using a first account among the plurality of accounts corresponds to a use pattern of the first account, and providing a notification for the user activity when the user activity does not correspond to the use pattern of the first account may be provided.

Abstract: Disclosed are methods and systems for controlling audio using an asymmetric channel of an audio conference. An audio control method may include establishing, by a processor included in a computer apparatus, a bi-directional media session having an asymmetric channel structure between a first participant among a plurality of participants participating in an audio conference and a mixer, receiving, by the processor, first audio data from the first participant through a media session of a first channel structure in the bi-directional media session, mixing, by the processor, second audio data of at least two participants excluding the first participant from among the plurality of participants, using a multichannel, and transferring, by the processor, the mixed audio data of the at least two participants mixed using the multichannel to the first participant through a media session of a second channel structure in the bi-directional media session.

Abstract: A location providing method implemented by a server comprising extracting text from an image received through an application executed on a first client, extracting matched location information corresponding to the image based on the text, and providing the matched location information and the image to one or more clients through the application.

Abstract: Disclosed is a method, system, and non-transitory computer-readable record medium for providing a plurality of group calls in a single chatroom. A group call providing method including receiving, by the at least one processor, information about a plurality of group call channels generated in response to a first request from at least one member included in a chatroom, from a server, providing, by the at least one processor, a group call channel list about the plurality of group call channels through the chatroom based on the information about the plurality of group call channels, and starting, by the at least one processor, a group call through a specific group call channel, from among the plurality of group call channels, in response to receiving a second request for joining the specific group call channel through the group call channel list may be provided.

Abstract: Disclosed is technique for a user context detection and interaction with a messaging service based on a user context in a messaging service environment. An interaction method of a mobile device may include acquiring information associated with a context of at least one of a mobile device and a user of the mobile device under control of an application installed and executed on the mobile device in association with a messaging service, determining a context of the user based on the acquired information, verifying a function to be provided to the user through the messaging service based on the determined context of the user, dynamically determining a configuration of a user interface based on the determined context of the user, and providing the function through the user interface of which the configuration is dynamically determined.

Abstract: Disclosed is a method, system, and non-transitory computer-readable record medium for creating a chatroom according to a condition. The chatroom creation method may include providing an instant messaging service; registering a chatroom creation condition related to a specific account of the instant messaging service; retrieving at least one account of accounts of the instant messaging service that meets the chatroom creation condition; and automatically creating a chatroom of the specific account joined by the retrieved accounts.

Abstract: A method, a system, and a non-transitory computer-readable record medium for providing a communication using a video call bot are disclosed. A video call method implemented by a computer apparatus, may include: in response to a request for inviting a chat bot to a video call in which a plurality of users comprising a user of the computer apparatus participate, displaying the chat bot on a display screen for the video call; transmitting, to a server, a command line that is associated with the chat bot and is extracted from an a voice input that is input to the computer apparatus during the video call; and in response to the command line, outputting a response to the command line through the chat bot that participates in the video call.

Abstract: Provided is a method of measuring quality of a video call between a transmitting terminal including processing circuitry and a receiving terminal, the method including processing, by the processing circuitry, original frames included in an original video based on a video call service; replacing, by the processing circuitry, real-time video frames acquired from a camera for a video call with a receiving terminal with at least a portion of the original frames; and transmitting, by the processing circuitry, the portion of the original frames to the receiving terminal as frames for the video call with the receiving terminal through the video call service.

Abstract: Disclosed is a method, system, and non-transitory computer-readable record medium for verifying a nearby friend based on a short-range wireless communication. A method of verifying a nearby friend based on a short-range wireless communication includes collecting, using processing circuitry, a plurality of device identifiers using short-range wireless communication, the plurality of device identifiers identifying a plurality of other electronic devices, transferring, using the processing circuitry, at least a portion of the plurality of device identifiers to a server, acquiring, using the processing circuitry, at least one social identifier from the server, each of the at least one social identifier being associated with a respective social network service (SNS) account, the at least one social identifier corresponding to the portion of the plurality of device identifiers, and providing the at least one social identifier through an interface of the electronic device.

Abstract: A method for providing a location based avatar messenger service includes transmitting, by a user terminal, location information of the user terminal to an external system; receiving, by the user terminal, information on users located in a vicinity of the user terminal from the external system; obtaining, by an image sensor of the user terminal, at least one image; and displaying, on a display of the user terminal, the at least one image and a first set of avatars associated with the users located in the vicinity such that the first set of avatars is superimposed on the at least one image, the first set of avatars including one or more avatars, the one or more avatars corresponding, respectively, to one or more users from among the users located in the vicinity.

Abstract: Disclosed are methods, systems, and/or a non-transitory computer-readable record mediums for producing a video based on a bot enabling a user feedback. A video production method may include receiving a plurality of images uploaded to a chatroom in response to a bot for a video production being added to the chatroom and the chatroom including at least one user, creating at least one primary video clip using at least two images among the plurality of images, creating a single video using the at least one primary video clip, and providing the created single video to the chatroom.

Abstract: Payment methods and systems for processing a payment using a Central Bank Digital Currency (CBDC) without a double payment in an offline situation (e.g., in a situation in which a terminal of a user is unable to be connected) to a server through a network may be provided.

Abstract: A method and a system for performing a group call using unicast and multicast are provided. A group call method performed by a first client device, may include: establishing a media session with a server providing a group call service based on a group call request from the first client device; transmitting, to the server through the media session, at least one first packet including a first source identifier of the first client device; providing a user interface at the first client device, that enables selecting at least one second client device from a plurality of second client devices that participate in a group call initiated by the first client device; and transmitting, from the first client device to the server, at least one second packet including a second source identifier of the selected at least one second client device as a destination of data included in the at least one second packet.

Abstract: Disclosed is a method, system, and non-transitory computer-readable storage medium for providing a pickup location. The pickup service method executable on a computer system, including displaying, by the at least one processor, one or more pickup candidate locations corresponding to a location associated with a user of an electronic device, on a map screen including the location, providing, by the at least one processor, guidance information on a pickup candidate location, which is selected by the user from among the one or more pickup candidate locations, on the map screen, and transmitting, by the at least one processor to a server, a pickup request including a final pickup candidate location that is selected by the user from among the one or more pickup candidate locations displayed on the map screen as a pickup location may be provided.

Abstract: A method is provided. The method includes based on an online meeting ending, receiving, by a user terminal, a link for creating a meeting note for the online meeting from an external device; based on a first user input of selecting the link for creating the meeting note, displaying a user interface for creating the meeting note on a display of the user terminal; receiving at least one second user input within the user interface for creating the meeting note; and transmitting information associated with the at least one second user input to the external device to control the external device to share the meeting note created based on the at least one second user input with at least one participant of the online meeting.

Abstract: A method of video quality evaluation includes obtaining, by the at least one processor, a reference area of a reference video and a degraded area of a degraded video, based on a matching area of the reference video and the degraded video, using homography estimation; correcting, by the at least one processor, at least one of the reference area and the degraded area; and measuring, by the at least one processor, video quality of the degraded video by comparing a difference between the reference area and the degraded area through a full reference scheme.