Entering keywords using keyboard

I work a lot with keywords in my workflow. I would like to be able to input existing keywords without having to select them with the mouse, but rather move to the keyword panel and select them using the keyboard, then moving on to the next image and doing the same. I wouldn't mind also being able to shift focus to the keyword field in the metadata panel and type in the keywords. Is any of this possible? Is there an add-on script or plug-in for it?