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Window is the easiest implementation of xID, since it requires minimal interference on your website. It also works well on mobile devices. However, remember that the dialogue window might fall behind the browser window on the users desktop, and its easy to loose track of the xID process for the user. Note this special use case for in-app browsers when selecting a window implementation.
A re-direct implementation will take control of the entire browser window, redirecting the user to the xID dialogues. The user will no longer see your website until they either finish or cancel the xID process and the URL will change as well. Note that the important elements of the xID-dialogue, like the logo, cancel button and changing the xID user, become easy to ignore, due to their placement along the edges of the browser window. On the other hand, re-direct works excellent on mobile phones. We recommend this implementation on mobile phones.
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