If you enable end-to-end encryption with LiveWall Premium, your browser will create a keyring and protect it with a passphrase. The passphrase is stored in your browsers local storage, and never sent to us. The public part of the keyring will be distributed to anyone uploading or snapping photos, so that the photos can be encrypted or their devices. When the photos reach your device, which has the private key and the passphrase, they can be decrypted and displayed.