Asset Receiver is a useful component for getting asset data from a user through a UIX. When this item is placed on a UIX that allows receiving (like a Button) and it's Reference field is filled, it will be active. When an item is pushed through the canvas where the button is so the interaction laser is hitting it and the item is let go; the value within the field inside of Reference is set to the first available IAsset which is exposed by an Asset Proxy.