Homebrew PCBs

> At 05:54 PM 9/26/2007, you wrote:
> >They defeated the ultrasonic detector by simply holding a 
> sheet (as in 
> >one off your bed) in front of them, and walked at a normal 
> pace. (Might 
> >have been a blanket.) Not quite what you were thinking.
> 
> And what about the multiple reflection paths?


What multiple reflection paths?  Bounce of the wall behind the person, hit
the person, bounce back to the wall and back to the sensor?  Right.

I guess that means you take two blankets.

Tony