Two screens, one session.
Every agency in this business claims it joins up the experience across devices. Here is the version you can test in fifteen seconds with the phone already in your hand.
What is really going on here.
- Position, not pixels. Your phone and your laptop will never agree on how tall this page is. So what crosses between them is how far down you are, as a fraction, which is why both screens land on the same sentence instead of the same number of pixels.
- Nothing you type is shared. Scroll, page and pointer travel. The inside of a form does not, and never will. No demonstration is worth parking a half-typed email address in a cache to pull off.
- It ends the second you say so. The session lives in one browser tab, knows nothing that identifies you, and dies on its own inside fifteen minutes. Press Stop and it is gone before you finish reading this.
- Nobody else is in the room. The two devices talk through this site and nothing else. No service is sitting in the middle watching, because this site makes no third-party requests at all, and it was not going to start with yours.