Who has an experience that had a hard time to hail a cab or taxi?Who has an experience that you were robbed of a cab or taxi?
Probably most people raise your hand, so "hail a taxi" is not easy even though it's weekday.
However, if you use CabFlash, you won't be robbed of a cab or taxi, which you want to ride!
Cab Flash has 2 modes. First is flashing backlight. Second is flashing screen. Flashing screen has 5 colors and if you shake it, screen's color will changes.