The present disclosure provides a method for interaction between terminals, implemented by a first terminal. The method includes: acquiring to-be-sent data; sending the to-be-sent data to a second terminal; displaying a display interface; monitoring whether first operation information from the second terminal is received, the first operation information including a processing operation received by the second terminal after the second terminal outputs the to-be-sent data and performed by a user of the second terminal on the to-be-sent data; and updating the display interface according to the first operation information once the first operation information sent by the second terminal is received. The present disclosure further provides an apparatus and a system for interaction between terminals. According to the present disclosure, data can be exchanged between terminals in real time, thereby improving interactivity between users of the terminals.

A method of increasing communication security may include receiving, at a first computer system, a first message including a first data portion and a second data portion, wherein the first data portion is associated with a security token, wherein the first data portion includes a first instance of a session key, and wherein the second data portion includes a second instance of the session key. The method may also include performing, at the first computer system, message validation associated with the first message. The method may further include generating, if the first message is valid, a second message including the first data portion. The method may also include communicating, if the first message is valid, the second message from the first computer system for delivery to a second computer system.

An apparatus and mechanism to subscribe to a single address and or session management service from multiple devices (such as e.g. tablets, smart phones, netbooks or other types of communication terminals or client devices) with a single account and password through the automatic assignment of a dynamic opaque SIP service profile to each device a user uses to signin to the service. After sign-in transparent call management services are provided to the user and allow the user to control sessions on any signed-in device from any signed-in device without revealing the distinct dynamic opaque SIP service profiles to the user.

A communication system may include a server, and first and second communications devices. The server may be configured to maintain a database having first and second communication profiles respectively associated with first and second users, and maintain first and second value accounts respectively associated with the first and second communication profiles. The server may be configured to process the message from the first user, debit the transaction value from the first value account, convert the message to be from the masked email address of the first user and send the converted message to the actual email address of the second user, and when receiving an acceptance message from the second user in reply to the converted message, then facilitate a communication between the first and second users, and transfer the debited transaction value to the second value account of the second user.

An e-mail system is disclosed that overcomes many deficiencies of, but is backward compatible with, existing e-mail systems. Embodiments of the system may include various features, including but not limited to: (1) secure transfer of e-mail messages, without the need for users to replace existing e-mail clients or to change e-mail addresses; (2) tracking of all actions performed in connection with an e-mail transmission; (3) the ability for a recipient to view information about an e-mail message, optionally including information about how other addressees have responded to it, before deciding whether to retrieve the e-mail message; (4) the aggregation of entire e-mail conversations into a single threaded view; (5) the ability to include both private and public messages in a single e-mail communication; (6) sender control over downstream actions performed in connection with an e-mail message; (7) flexible control over cryptographic methods used to encrypt emails messages for storage.

An electronic messaging system that receives an original electronic message from a sender direct access client associated with a sender, the original electronic message including header and message information and being directed to a recipient. The electronic messaging system deletes the header information after a first predetermined time after the message information is accessed by the recipient, deletes the message information after deleting the header information, and generates a reply ID correlated with the sender of the electronic message in at least one of a database, a lookup table and an entry in a file system. The reply ID enables the electronic messaging system to direct a reply electronic message back to the sender, the reply ID being part of the header information of the original electronic message.

An electronic messaging system that receives an original electronic message from a sender direct access client associated with a sender, the original electronic message including header and message information and being directed to a recipient. The electronic messaging system deletes the header information after a first predetermined time after the message information is accessed by the recipient, deletes the message information after deleting the header information, and generates a reply ID correlated with the sender of the electronic message in at least one of a database, a lookup table and an entry in a file system. The reply ID enables the electronic messaging system to direct a reply electronic message back to the sender, the reply ID being part of the header information of the original electronic message.

An electronic messaging system and method with reduced traceability by separation of display of a media component of message content and header information. An electronic message having an identifier of a recipient and a message content including an image media component is received at a server from a sending user device at which a display for associating the media component with the electronic message is provided without displaying the identifier of a recipient with the media component such that a single screen capture of the identifier of a recipient and the media component is prevented. The electronic message including an identifier of a sending user is transmitted to a recipient user device at which a display presenting the media component is provided without displaying the identifier of a sending user such that a single screen capture of both the identifier of a sending user and the media component is prevented.

An electronic messaging system and method with reduced traceability by separation of display of a media component of message content and header information. An electronic message having an identifier of a recipient and a message content including an image media component is received at a server from a sending user device at which a display for associating the media component with the electronic message is provided without displaying the identifier of a recipient with the media component such that a single screen capture of the identifier of a recipient and the media component is prevented. The electronic message including an identifier of a sending user is transmitted to a recipient user device at which a display presenting the media component is provided without displaying the identifier of a sending user such that a single screen capture of both the identifier of a sending user and the media component is prevented.

An apparatus and mechanism to subscribe to a single address and or session management service from multiple devices (such as e.g. tablets, smart phones, netbooks or other types of communication terminals or client devices) with a single account and password through the automatic assignment of a dynamic opaque service profile to each device a user uses to sign in to the service. After sign-in transparent call management services are provided to the user and allow the user to control sessions on any signed-in device from any signed-in device without revealing the distinct dynamic opaque service profiles to the user.