There was a futurama episode where they could beam advertisements into your dreams while you were sleeping. They want this. Archive: https://archive.today/hwmn5 From the post: >>Three Democratic senators are sounding the alarm over brain-computer interface (BCI) technologies’ ability to collect — and potentially sell — our neural data. In a letter to the Federal Trade Commission (FTC), Sens. Chuck Schumer (D-NY), Maria Cantwell (D-IN), and Ed Markey (D-MA) called for an investigation into neurotechnology companies’ handling of user data, and for tighter regulations on their data-sharing policies.