I have used my palmtop to control tv and air con.. but nothing like this...

The 14-year-old modified a TV remote control so that it could be used to change track points, The Telegraph reports. Local police said the
youngster trespassed in tram depots to gather information needed to
build the device. The teenager told police that he modified track
setting for a prank.

"He studied the trams and the tracks for a long time and then built
a device that looked like a TV remote control and used it to manoeuvre
the trams and the tracks," said Miroslaw Micor, a spokesman for Lodz
police.

"He had converted the television control into a device capable of
controlling all the junctions on the line and wrote in the pages of a
school exercise book where the best junctions were to move trams around
and what signals to change.

Cool shit..