embedded iframe

There are two ways that peermaps can be embedded as an iframe:

• hidden, requesting data only
• visible, displaying a map

Both should tie into a permissions approval model that can be managed from the web app or possibly also from the embedded element when it is visible. When the iframe is opened in hidden mode, it could expand to present a visible ui in order to request permission, then disappear if permission is given.

Both methods can be driven by the parent web page using postMessage.