What the shopper does
On a phone, the shopper opens the product page and taps "view in my room". The camera opens. They point it at the floor where the piece would go, and the piece appears there. They can slide it against the wall, turn it and walk around it. They see whether it clears the door, the window and the furniture they already own.
On a laptop, the page shows a QR code in place of the button. The shopper scans it with a phone and carries on from there. No account, sign-up or app is involved at any point.
This is what augmented reality furniture placement means in practice: one piece, at its true size, in the room it is meant for. Some sites label the button "AR view" or "see it in your room". The wording on your site is yours to choose.



