Secure Settings is a free and powerful plug-in for Android 2.2+ that is compatible with Locale and Tasker. This app has tons of features for super users or those who just want more out of their devices. With Secure Settings, users can create conditions and actions that can be triggered by various events. The app has a variety of conditions, including failed login attempts, outgoing calls, and secret codes. The actions are equally impressive and include toggling airplane mode, adjusting font size, launching any activity, and running GNU Linux commands, among others.

One thing to note is that Secure Settings uses the Device Administrator permission to lock your device's screen and set/unset your device's password. Therefore, it requires Device Administrator permissions to make these changes. Any changes to your password will only occur when Secure Settings is instructed by you via another app such as Tasker. If you are rooted, you can enjoy even more features like toggling accessibility services, setting background process limits, and toggling data roaming, among others. Overall, Secure Settings is an excellent tool for Android users who want more control over their devices.