I was looking at this the other day "Neural Dust: An Ultrasonic, Low Power Solution
for Chronic Brain-Machine Interfaces https://arxiv.org/pdf/1307.2196.pdf " and trying to figure out how they could remove need for transceiver RF to Ultrasound with 5g. I'm a bit behind on phone tech never had a smartphone but found out a lot of phones use ultrasonic fingerprint sensor technology . Just putting it out there could this be how they could read write brain neural dust from vax just with a phone?