"In China, the government is already mining data from some employees’ brains by having them wear caps that scan their brainwaves for depression, anxiety, rage, or fatigue. “If your employer wants you to wear an EEG headset to monitor your attention levels, that might qualify as a violation of the cognitive liberty principle,” Ienca said, because even if you’re told that wearing the device is optional, you’ll probably feel implicit pressure to do so since you don’t want to be at a competitive disadvantage."