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Unfortunately, we do not have an app or plugin that allows you to fill out the form using touch screen/tablet/graphic device that allows you to make input values by handwriting. What we have are signature related widgets.
I see that this is somehow possible on PDF forms and for some standalone applications directly installed on a Mac or PC computer, they let you sign and convert handwriting gestures in a tablet/touch screen to text input fields. However, I'm unable to find any plugin for web browsers that can do this, but I might have missed something, the world wide web is quite huge. This is quite a complicated software.
Do let us know if you need more information on this.