In-air gesture interaction enables a natural communication between a man and a machine with its clear semantics and humane mode of operation. In this paper. we propose a real-time recognition system on multiple gestures in the air. It uses the commodity off-the-shelf (COTS) reader with three antennas to detect the radio frequency (RF) signals of the passive radio frequency identificat... https://chefesquipmenters.shop/product-category/cocktail-glasses/