This datapack adds an input tracker that displays which inputs the player is currently pressing. The input tracker can be crafted with an observer and 4 gold ingots:

The red sections on the input tracker will light up depending on which inputs the player is pressing:

When held in the player's hand or offhand, the item will display directly facing the player for easier readability:

This project was primarily created to show off user controls for my Enchanted Elytra datapack, but I figured I might as well share it here.