There are a ton of chat applications out on the market right now, all of them have quite a complex chat input area that allows for text, emojis, and images. Something else about this chat input that you might not have noticed is that it follow the keyboard and scrollview as you scroll up and down. This is a tricky feature to implement correctly, but using a custom <b>InputAccessoryView</b> allows for this behavior. Let's implement this in today's lesson.