An item represents an entity that you want to recognize. Examples of items are logos, physical objects, or drawings, among others.
An item contains:
Upon recognition of an item, the body of the response may contain the URL and custom data of that item.
Typical uses of the URL include a website with information or a video related to the item. Check the Recognition API to learn more.
Custom data is a free field for your application or service logic.
This chart gives you an idea of the hierarchy of data: