Could you detect consent through tracking brain waves? There are few classrooms in china using bands to detect whether kids are focusing on the material or not

Could you detect consent through tracking brain waves? There are few classrooms in china using bands to detect whether kids are focusing on the material or not. I wonder if that can be extended to consent too if it works. That will solve the problem of continuous consent. The application of this stretches beyond the bedroom. It might be used in court, research, experiments, medical treatment, contracts, notarization, etc. You could add it as a layer in security or authorization systems. https://www.youtube.com/watch?v=JMLsHI8aV0g https://www.youtube.com/watch?v=JMLsHI8aV0g That seems like an interesting problem to solve.