DatChat Messenger is a private encrypted messaging and social networking platform that gives senders control over their messages after they have been sent. Key capabilities include: - Message expiration control: Senders can set messages to self-destruct after a defined number of views or a set time period, or configure them to last indefinitely. - Post-send rights management: A patented Messaging Rights Management system allows senders to modify message duration, revoke access, or extend viewing time even after a message has been delivered. - Message deletion: Individual messages or entire conversation threads can be deleted from both the sender's and recipient's devices at any time. - "Nuke" feature: Erases both sides of a conversation simultaneously from all devices involved. - Screenshot protection: A patented protection mode limits the ability to capture screenshots of protected messages or images, with notifications sent to the sender if a screenshot attempt is detected. - Encryption: Messages are encrypted using AES-256 for content and RSA for key exchange. Each message is individually encrypted per recipient. All transmissions occur over SSL. DatChat has no access to user decryption keys. - Private groups: Users can create separate, private social networks with controlled access to posts, images, and media. - Download prevention: Content cannot be downloaded without the sender's permission, and messages cannot be forwarded or saved.