Changes: (changes marked* refer to the paid version only)

2.1.7
- updater verifies authenticity for downloaded files.*
- fixed an updater issue in v2.1.6*

2.1.6
- moved app data storage settings to the About window.*
- option to sleep on idle, 1 minute after system resumes.*
- option to sleep on idle, 15 minute after system resumes.*
- the old sleep on wake behavior is removed.
- fixes and improvements.

2.1.3
- option to blur the background image.*
- option to use a blurred screenshot as background image.*
- fixes and improvements.

2.1.1
- fixed an issue in the portable version update process.
- other improvements.

2.1.0
- additional users and passwords can now be managed in settings.*
- can swap PgUp/PgDn keys with Arrow keys (see F1 help).
- fixes and improvements.

2.0.12
- argument after "lock" to specify the path to a PNG image to show.*

2.0.11
- app can check if there's a new version available (see F1 help).
- portable version can update itself.*

2.0.10
- added option to allow media keys (see F1 help).

2.0.9
- added option to unlock on swipe.
- added unlock sound.
- stores app settings more securely when installed from Store.*

2.0.8
- option to disable auto sleep (after idle on wake).
- provided registry key to enable S3 standby.

2.0.7
- fixes and improvements.

2.0.5
- per monitor window scaling according to DPI.
- various fixes and improvements.

2.0.1
- fixed issue, start on login button hidden.

2.0.0
- "OneLock" argument changed to "LockOnce".
- "Lock" and "LockOnce" can be used while ScreenBlur is running.*
- support for high DPI monitors, interface changes.
- can lock on use, can dim desktop on idle.
- hotkey available to turn off the screen.
- backspace key can be used while unlocking the screen.
- hashes are now stored instead of the actual user passwords.
- additional secured passwords can be set for up to 255 users.*
- plain text passwords can be set for guests if more users are needed.*
- option to protect the settings with the main password.*