The first world record in the 100 metres sprint for women was recognised by the Fédération Sportive Féminine Internationale (FSFI) in 1922.
From 1975, the IAAF accepted separate automatically electronically timed records for events up to 400 metres.
Starting January 1, 1977, the IAAF required fully automatic timing to the hundredth of a second for these events.
[1] Wyomia Tyus's 1968 Olympic gold medal performance and Renate Stecher's 1972 Olympic championship win, both in 11.07, were the fastest recorded fully electronic 100-metre races to that time and were ratified as world records.
[1] *There is controversy over Griffith-Joyner's world record as questions have been raised as to whether the wind actually was zero, as indicated by the trackside anemometer.