Here's the moment when the South Carolina Education Lottery 2011 tv draw malfunctioned, shooting balls all over the studio and startling the announcer.
Over the last 30 years of lottery draws, security procedures have improved - apart from a rare occurrence like the South Carolina draw above.
Here are the ways two USA states make sure the security of their lottery drawings are kept tight:
The New York Lottery maintains several duplicate sets of Lotto balls. A set is chosen at random before each drawing. - The balls are weighed before and after each drawing to make sure no tampering has taken place. - The equipment is all kept in a locked vault until just before the drawing.
A New York Lottery draw taking place.
The Oregon State Lottery is overseen by the Oregon State Police. A detective attends each drawing to ensure the security.
In 1980, there was a scheme to fix the Pennsylvania Lottery's Daily Numbers game. In this game, three single-digit numbers are drawn. The conspirators injected all of the numbers except for the fours and sixes with white paint so that they were too heavy to be blown up to the top of the chamber.
A Pennsylvania lottery tv draw in 2014.
When the numbers were selected on live television, sure enough, the winning number was 6 - 6 - 6. Before the numbers were drawn, the conspirators had purchased many tickets all over the state for the eight different combinations that are possible with sixes and fours. They ended up winning $1.8 million.
As a result of this scandal security has tightened up for lottery drawings, and officials around the world today claim there is no chance of doctoring or fixing any lottery results.
Source: How Stuff Works