Abstract: The current invention discloses methods and devices for adding a new member to a group, e.g. a chat group associated with a chat program. The new member may be added through a barcode-scanning process or an existing-member-invitation process. After the new member is added to the chat group, a server may send notification messages to mobile devices associated with the existing members of the group. The contents of the notification messages may vary based on the processes by which the new member is added, the number of existing members, and the direct-contact relationships the new member has with the existing members. The current invention provides simplified methods and devices for adding the new member, avoiding cumbersome operations and protecting member privacy at the same time.

Abstract: The current invention discloses methods and devices for adding a new member to a group, e.g. a chat group associated with a chat program. The new member may be added through a barcode-scanning process or an existing-member-invitation process. After the new member is added to the chat group, a server may send notification messages to mobile devices associated with the existing members of the group. The contents of the notification messages may vary based on the processes by which the new member is added, the number of existing members, and the direct-contact relationships the new member has with the existing members. The current invention provides simplified methods and devices for adding the new member, avoiding cumbersome operations and protecting member privacy at the same time.

Abstract: The current invention discloses methods and devices for adding a new member to a group, e.g. a chat group associated with a chat program. The new member may be added through a barcode-scanning process or an existing-member-invitation process. After the new member is added to the chat group, a server may send notification messages to mobile devices associated with the existing members of the group. The contents of the notification messages may vary based on the processes by which the new member is added, the number of existing members, and the direct-contact relationships the new member has with the existing members. The current invention provides simplified methods and devices for adding the new member, avoiding cumbersome operations and protecting member privacy at the same time.

Abstract: A device may include a storage medium and a processor. The processor may execute a set of instructions in the storage medium to: provide a first platform; provide a first user account registered in the first platform to a user; access, through the first user account, a second user account of the user registered in a second platform; obtain, from the second user account, a communication log of the second user account; obtain an address list from the second user account; obtain a plurality of contacts from the second user account who have a prior communication with the user through the second user account based on the communication log; select, from the plurality of contacts, at least one recommended contact for the user; combine the at least one recommended contact with the address list in to a combined list; and display the combined list via the first user account, highlighting the at least one recommended contact to the user.

Abstract: Various embodiments provide methods, apparatus, and systems for logging in an application account. A request for logging in an application account sent from a first terminal can be received. It is detected if the first terminal can be included in frequently used terminals corresponding to the application account. First verification information can be sent to a second terminal bound with the application account, when it is detected the first terminal is not included in the frequently used terminals corresponding to the application account. Second verification information can be received from the first terminal to detect if the second verification information matches the first verification information. When it is detected that the second verification information matches the first verification information, the request for logging in the application account can be responded.

Abstract: A device may include a storage medium and a processor. The processor may execute a set of instructions in the storage medium to: provide a first platform; provide a first user account registered in the first platform to a user; access, through the first user account, a second user account of the user registered in a second platform; obtain, from the second user account, a communication log of the second user account; obtain an address list from the second user account; obtain a plurality of contacts from the second user account who have a prior communication with the user through the second user account based on the communication log; select, from the plurality of contacts, at least one recommended contact for the user; combine the at least one recommended contact with the address list in to a combined list; and display the combined list via the first user account, highlighting the at least one recommended contact to the user.

Abstract: Various embodiments provide methods, apparatus, and systems for logging in an application account. A request for logging in an application account sent from a first terminal can be received. It is detected if the first terminal can be included in frequently used terminals corresponding to the application account. First verification information can be sent to a second terminal bound with the application account, when it is detected the first terminal is not included in the frequently used terminals corresponding to the application account. Second verification information can be received from the first terminal to detect if the second verification information matches the first verification information. When it is detected that the second verification information matches the first verification information, the request for logging in the application account can be responded.

Abstract: Various embodiments provide methods and apparatus for displaying an emoticon. In an exemplary method, an instant message can be received and a pre-set keyword contained in the instant message can be determined. An emoticon corresponding to the pre-set keyword contained in the instant message can then be obtained and displayed on a chat interface displaying the instant message. Accordingly, an exemplary apparatus for displaying an emoticon can include a first obtaining module, a second obtaining module, and/or a displaying module.

Abstract: The current invention discloses methods and devices for adding a new member to a group, e.g. a chat group associated with a chat program. The new member may be added through a barcode-scanning process or an existing-member-invitation process. After the new member is added to the chat group, a server may send notification messages to mobile devices associated with the existing members of the group. The contents of the notification messages may vary based on the processes by which the new member is added, the number of existing members, and the direct-contact relationships the new member has with the existing members. The current invention provides simplified methods and devices for adding the new member, avoiding cumbersome operations and protecting member privacy at the same time.