Originally Posted by
Darth Lefty
Magnetic or optical would be my guesses
Originally Posted by
arsprod
Steel vs aluminum?
I ran into the security guy in the hall and asked him about the sensor. He didn't know for sure, but he thought it was optical. If it was, I would think that any bike I used would set it off.
My winter bike is aluminum. My fixie is steel, and that doesn't set it off. So it doesn't seem to be magnetic either.
The mystery continues!