By tapping out different patterns (it detects only the shock, not the strength) the idea is that you could turn lights on and off, control appliances, and so forth.

ENGADGET: A fingertap away

The most persuasive evidence that Voyager 1 has crossed the termination shock is its measurement of a sudden increase in the strength of the magnetic field carried by the solar wind, combined with an inferred decrease in its speed.

BBC: Voyager impression (Nasa)

Rooney said that concerns over the club's squad strength were behind his decision to seek an exit, but then made the shock U-turn after speaking to manager Sir Alex Ferguson and the club's owners who he stressed "convinced me this is where I belong".

BBC: Wayne Rooney to spend week in US to recover from injury