It's hard to see a case of ball tampering, where other members of the team are not aware, and isn't premeditated. Whether you go through from Waqar Younis to Atherton, or even Du Plessis' two cases more recently.
The only way to get rid of it, would be to get rid of ball shining also. The umpire gives the bowler the ball and it must be held in one hand, and the bowler has to get the umpire, even to remove a piece of dirt on the ball. The umpire's job is to keep the ball clean, so, he'd pick up any abnormalities in the ball.
With the advent of 20/20, and its popularity, it is proof that people like to see the bat dominate, and the little edge the above may give the batsmen, could liven up test cricket.
