Yep, magnets. They are discussed briefly in the Ars Technica video, here: http://arstechnica.com/gadgets/2015/10/sit-stand-nifty-new-workstation-lets-you-lie-do

Yep, magnets. They are discussed briefly in the Ars Technica video, here: http://arstechnica.com/gadgets/2015/10/sit-stand-nifty-new-workstation-lets-you-lie-down-on-the-job/ http://arstechnica.com/gadgets/2015/10/sit-stand-nifty-new-w...