Photography technology was not applied to electronic timer and terminal photography until 1875 Olympic Games.

19 12 in the 5th Stockholm Olympic Games, electronic timers and terminal cameras were used for the first time in track and field competitions, which made the measuring time accurate to110 second.

Data expansion: 1900 Olympic Games, without technical assistance, the referee can only lie on the ground and see with the naked eye whose foot crossed the line first. 19 12 The 5th Winter Olympics used electronic timing, and the track and field events were accurate to 0. 1 second. 1936 Winter Olympics is accurate to 0.0 1 second. Now we can be accurate to one thousandth of a second. Science and technology bring us closer to the Olympic spirit of fairness and justice. In addition to timing, Olympic broadcasting technology is also developing.