If you're looking for more technical details you'll find a link to the recently published paper titled, Dexterous manipulation of microparticles using Bessel-function acoustic pressure fields at the source.
Many of us would be happy to live with a bigger version of 1950s government: one that ran surpluses and was dexterous enough to tackle long-term problems as they arose.
Your thumbs naturally find their place hovering above the virtual decks, but the unit it plenty light enough that you can hold it with one hand, while using the other for more dexterous performance manoeuvres.