Hertfordshire Mercury, 23rd March 1951
Some of the ways in which fingerprints and police photographs assisted in the detection of crime were explained to members of Hertford Rotary Club on Tuesday by Det.-Sergt. F. E. Walker of Hatfield.
Describing how every fingerprint had ridge characteristics , he said it was the order in which these characteristics appeared which gave the police their identification .
There had never been a case of duplication of fingerprints .
” If two prints of separate fingers were found to be identical it would ruin the whole fingerprint system ,” he declared .