Use APKPure App
Get Locale Lock Screen Plugin old version APK for Android
Use Locale to enable or disable your pattern lock.
WILL NOT and CANNOT work on Froyo! See the website for more information.
THIS IS A PLUG-IN: it requires Locale or Tasker from the Android Market.
This Locale/Tasker plug-in can enable and disable the lock pattern.
Email me if you encounter any problems.