Although urban legends persist that a mobile phone can cause sparks, this has not been duplicated under any controlled condition. Nevertheless, mobile phone manufacturers and gas stations ask users to switch off their phones. One suggested origin of this myth is said to have been started by gas station companies because the cell phone signal would interfere with the fuel counter on some older model fuel pumps causing it to give a lower reading. In the "MythBusters" episode "Cell Phone Destruction", investigators concluded that explosions attributed to cell phones could be caused by static discharges from clothing instead and also observed that such incidents seem to involve women more often than men.