NOT FOR LOLLIPOP, see https://code.google.com/p/android/issues/detail?id=78272

Android 5.0+ users should use the new Smart Lock feature.

New version, completely redesigned and reimplemented.


Take total control of your lockscreen. Satisfaction guaranteed!

Features:
* Automatically replace the PIN/password lock screen with plain keyguard when selected Wi-Fi networks Bluetooth devices are connected
* Allow the complete removal of the keyguard when selected connections are present
* Configurable notifications for enabling/disabling of the lockscreen security
* Individual device and network management for access control
* Configurable requirements for manual unlock of the screen prior to granting full access
* Light-weight and low memory consumption
* Simple swipe and menu interfaces
* Convenient password changing
* Open Source Software: available on github for auditing, contributing, or if you're just plain cheap!

Notes:
* This application requires its own Device Administrator to be enabled. The permissions used are setting the lockscreen on and off, and detecting if the pin/password is changed outside of the app.
* If another Device Administrator is set and it requires password policies, it is very likely that it will prevent this app from working
* To uninstall, disable this app's Device Administrator, then uninstall as normal
* Run at boot permissions are used to ensure the lock screen is in the correct state when the device is rebooted; no persistent services are used except for the keyguard-disabler

Trivia:
* If you use Exchange and are forced to have a PIN/Password policy, consider using this hack, which is a patch to AOSP: https://gist.github.com/pfn/8025880