Messiah supports tablets, such as those made by Wacom.  Tablets are especially useful with Animate Immediate and OnionSkin; it makes for a very fluid workflow.

Because tablets operate in absolute coordinates (when in Pen mode), the view navigation controls can be difficult to use.  This is not a bug or a problem with a system, and nothing really can be done about this behavior.  However, you shouldn't use the view navigation controls; you should use the world navigation hotkeys instead:

Some users like to use their tablet in Mouse mode instead of Pen mode.  In this case, you'll find that the tablet doesn't function properly with messiah.  However, there is a quick solution:  Go to CustomizeKeyCommand Manager and look for the Inupt commands in the Interface command class.  Just double-click on the command that currently reflects your preferred mode.  You'll only need to do this once since the option is stored to your config.