This program demonstrates how you can use multiple tags to create a 'handle' to information, and then recall that information later.

When a tag is seen for the first time, a 'color chip' is created with a random color. When the tag is seen again, the background color becomes the color associated with that tag.

In the example below, the person has swiped 8 tags over the reader, creating 8 different color chips, and has then swiped the 7th (gold) color again, which recalled it.

The code in this example can be reused by modifying the collection classes to handle a broad variety of information.