If your device is running Android 4.2 or later, you can add a widget to your lock screen using the following steps:
- From your lock screen, swipe to reach the leftmost lock screen page.
- Tap on the + icon to add a new widget.
- Tap on the Remember The Milk widget. (If you're not able to select a widget, it may be necessary to unlock the device first.)
- Select the view you'd like it to show and tap Save.