Radiowave
They travel right through your body

Radio
WiFi and others
Wi-Fi signals are also made of radio waves. Receiving antennas can wirelessly harvest electromagnetic radiation in the Wi-Fi (2.4 GHz and 5.9 GHz), global satellite positioning (1.58 GHz and 1.22 GHz), the cellular communications fourth-generation (4G) (1.7 GHz and 1.9 GHz), and Bluetooth (2.4 GHz) bands and convert the energy from these electromagnetic waves to alternating current (AC) electricity.
With radar systems you can beam two radio signals that have a low radio wave signal in between. That is the same low as the brainwave. Your brain acts as an antenna. In combination you can harvest and plug electricity in the brain and use the returned radar signal.

N3 project
Parc team
The PARC team, under principal investigator Dr. Krishnan Thyagarajan, created a completely noninvasive acousto-magnetic device for writing to the brain. Their approach pairs ultrasound waves with magnetic fields to generate localized electric currents for neuromodulation. The hybrid approach offers the potential for localized neuromodulation deeper in the brain

N3 project
BrainSTORM
Batelle univerity worked on this concept with DARPA funding.
Nanotransducers: magnetic nanoparticles wrapped in a piezoelectric shell would convert electrical signals from the neurons into magnetic signals that can be recorded and processed by the external transceiver, and vice versa, to enable bidirectional communication. This allows external transceivers to wirelessly pick up the transformed signals and stimulate the brain through a bidirectional highway.

patent
Mind Control
Robert Malech patent is one of the 95 known patents to read and write the brain without wires. Patents for mind control. The secret patents that belong to the CIA, NSA and Dutch MIVD also exist. These are not in the public domain. But are based on other patents. Mind Control is a fact. Not publishing about its developments is dangerous now it is combined with AI.