Let's say we have a marketing website for a large enterprise app. There's also a link to a demo where you can try the app. The app itself is designed for full-size browser only, but the marketing website is responsive and will often be viewed from a mobile device.
On the desktop version of the site we can have a button that leads directly to the demo. But if someone presses it on a mobile device, they will arrive at an unusable page. So we need some way to provide a smooth transition for the user from the mobile device to a desktop site, a process that begins on the smartphone and ends on the pc. How can this be done?