Methods and devices for adding new member to group through barcode scanning

A computer system, comprising a server and one or more mobile devices, the server having:

• one of more processors;
• memory;
• and
• one or more programs modules stored in the memory and configured for execution by the one or more processors, the one or more program modules including:
• a receiving module configured to receive a joining request to add a new member to a chat group having one or more existing members, wherein the joining request is sent by a first mobile device associated with the new member using a barcode-scanning process or by a second mobile device associated with a first existing member using an existing-member-invitation process, wherein:
• the barcode-scanning process comprises:
• scanning a barcode encoding chat group information corresponding to the chat group using the first mobile device;
• decoding the barcode using a barcode decoding module to obtain the chat group information corresponding to the chat group;
• and
• generating the joining request based on the chat group information,
• and the existing-member-invitation process comprises:
• sending an invitation to the new member to join the chat group using the second mobile device, wherein the new member has a direct-contact relationship with the first existing member;
• and
• generating the joining request based on the invitation,
• an addition module configured to add the new member to the chat group without further authorization from the existing members of the chat group;
• a determination module comprises a process determining subunit configured to determine whether the new member is added to the chat group through the barcode-scanning process or the existing-member-invitation process;
• and
• a notifying module configured to send corresponding notification messages to the existing members of the chat group based on whether the new member is added to the chat group through the barcode-scanning process or the existing-member-invitation process.

A non-transitory computer readable storage medium having stored therein one or more instructions, which, when executed by a server, cause the server to:

• receive a joining request to add the new member to the chat group, wherein the joining request is sent by a first mobile device associated with the new member using a barcode-scanning process or by a second mobile device associated with a first existing member using an existing-member-invitation process, wherein:
• the barcode-scanning process comprises:
• scanning a barcode encoding chat group information corresponding to the chat group using the first mobile device;
• decoding the barcode using a barcode decoding module to obtain the chat group information corresponding to the chat group;
• and
• generating the joining request based on the chat group information,
• and the existing-member-invitation process comprises:
• sending an invitation to the new member to join the chat group using the second mobile device, wherein the new member has a direct-contact relationship with the first existing member;
• and
• generating the joining request based on the invitation,
• adding the new member to the chat group without further authorization from the existing members of the chat group;
• and
• send corresponding notification messages to the existing members of the chat group based on whether the new member is added to the chat group through the barcode-scanning process or the existing-member-invitation process.