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6G has already started , TX up first and yes, wireless technology can detect a heartbeat without anything implanted in your body. Researchers have demonstrated systems that analyze tiny changes in reflected Wi-Fi/radio signals caused by movement of the chest and body. A 2025 system called Pulse-Fi measured heart rate using ordinary Wi-Fi signals, and experimental integrated sensing-and-communications systems have detected both breathing and heartbeat.

And this capability is relevant to 6G research. NIST specifically describes a proposed 6G feature called Integrated Sensing and Communication (ISAC)—essentially allowing a communications network to function partly as a sensor, potentially detecting objects, movement and position. Privacy and security researchers are already raising concerns about how sensing information from future 6G networks should be protected