there is a risk of being jammed or spoofed which is why there has been a bunch of research done in the automotive industry. https://www.caee.utexas.edu/prof/bha

there is a risk of being jammed or spoofed which is why there has been a bunch of research done in the automotive industry. https://www.caee.utexas.edu/prof/bhat/ABSTRACTS/SecurityOverview_mmWave_V2X.pdf https://www.caee.utexas.edu/prof/bhat/ABSTRACTS/SecurityOver... But I don't think there is much risk in gesture control.