What he did not foresee was the development of the transistor and later the integrated circuit, which mean satellites are far smaller than the objects he sketched out, which would have used valvetechnology and needed regular maintenance.
Mike Ambinder is the company's very own experimental psychologist and he's been outlining some of Valve's work with biofeedback technology, including eye-motion controls for Portal 2 and perspiration-based gaming adjustments on Left 4 Dead.
Valve's Joe Ludwig says that the TF2's robust community is ideal for testing out the new technology, and both companies are eager to see how the community reacts.