In a study, the researchers describe using beamforming feedback information (BFI) and machine learning models to identify people walking within a network’s range. The team found that this BFI-based technique was able to infer a person’s identity with 99.5% accuracy.

Yipes!

Fortunately, the solution is simple. Your tinfoil hat needs to extend into a cylinder around your entire body, , like an RF condom.