NEW TOYS READ BRAIN WAVES
A convincing twin of Darth Vader stalks the beige cubicles of a Silicon Valley office, complete with ominous black mask, cape and light saber. But this is no chintzy Halloween costume. It's a prototype, years in the making, of a toy that incorporates brain wave-reading technology.
Ref. https://www.cbc.ca/technology/story/2007/04/30/tech-toys.html