The following grant access to *all* users. This is useful if you've mistakenly restricted access to a few and have locked yourself out.

### For ARD versions *below* 3.2

    sudo /System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart \
    -activate -configure -access -on -restart -agent -privs -all

### For ARD versions *above* 3.2

    sudo /System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart \
    -configure -allowAccessFor -allUsers -privs -all