Add a tagging box similar to Assets

How can I add a tagging box similar to the Assets' tags to a template?

It seems to be using special markup and a library:

<div class="field">
     <label for="tags" class="">Tags</label>
<input type="text" id="tags" name="tags" value=""data-tags="/core/apps/assets/async/tags.php" class="text " />
<span class="hint">Complete each tag with a comma.</span>
</div>

I'm currently using a text area to store tags, which lacks JS features such as identifying each word separated by a comma as a separate tag, deleting tags with a click.

Or did I miss a way to use the built-in tagging feature found in the Assets to other templates?

Thank you