# If the button is labelled {{$:/core/images/unlocked-padlock}} ''set password'' then the current wiki is not encrypted. Clicking the button will prompt for a password that will be used to encrypt subsequent saves
# If the button is labelled {{$:/core/images/locked-padlock}} ''clear password'' then the current wiki is already encrypted. Clicking the button will remove the password so that subsequent saves will be unencrypted
* The ability to use standard HTTP basic authentication with the [[Node.js|TiddlyWiki on Node.js]] server configuration. This is done on the command line with the ServerCommand. Combined with SSL, this gives the same level of transit encryption as you'd get with online services like Google or Dropbox, but there is no encryption of data on disk