All cell phones collect heartbeat, gait, respiratory, and voice signature data from users and nearby humans.

Many earbuds and headphones collect speech, brainwave, and facial micromuscular data that accurately identifies/predicts activity, behavior, and thoughts.

Associated tech is older and far more advanced than the public is aware.

🐰 🕳️

https://technology.nasa.gov/patent/TOP2-186

https://www.technologyreview.com/2019/06/27/238884/the-pentagon-has-a-laser-that-can-identify-people-from-a-distanceby-their-heartbeat/amp/

https://www.sciencedirect.com/science/article/pii/S0167404821003813

https://neurosciencenews.com/eeg-earbuds-17975/

https://www.euronews.com/next/2023/06/14/these-neurohacking-headphones-use-ai-to-track-your-brain-signals-to-help-you-stay-producti

nostr:nevent1qqsw4tvzqh7s8ml8fxshldeppy8443jy5psgsf2rufznaqu3wuvgt0gpr3mhxue69uhkummnw3ezucnfw33k76twv4ezuum0vd5kzmqzypqweavm2cqfsyl2fscgrvvan4f97akm7fg6tgpcnd975f7r56uc7qcyqqqqqqg0nu0ur