question? can i press the forward/backward button on my mp3? we can press the f/b button on the installed audio system, but mp3 is an electric devices.
tofu 發表於 2010-1-5 23:37 
I think technically, you can press any button of any device just ONCE.
Other thoughts, we might need to press/switch/turn on or off A/C, power window, radio, vent's switch, music volume.....etc from time to time anyways. In case you get caught for any reason, if you don't have any external device in sight, cops can't say anything. But if you have a device attached somewhere in sight, even you only pressed a button once but the cop says he saw you pressed twice, it's difficult to give proof. Just drive safe in a smart way. |