The landing page and FAQ heavily imply that HP's cloud service is the only way to control the thing. Spec sheet shows the robot as having “Connectivity: Bluetooth, 4G, WiFi”, so it can connect to the cell network directly: https://h20195.www2.hp.com/v2/getpdf.aspx/c08982823.pdf
Landing page sez “How HP SitePrint works: Use the HP plugin to get a robot-ready file … Save the 2D .dxf file into the cloud”. FAQ agrees, under “How do I control the robotic layout solution?” https://www.hp.com/us-en/printers/site-print/layout-robot/fa...
If HP cloud is the only way, is there a Privacy Policy for this? Would HP store the DXF beyond the time the layout gets uploaded and the robot finishes printing? Are they storing data from other sensors? Data from RTS? If they are storing anything, are they also selling them, or selling conclusions drawn from them?