Toe print
A fetus’s toe prints develop at the same time as fingerprints, and are just as unique. Since crooks are more likely to leave fingerprints behind, the FBI maintains a national database that links 66 million people to their fingerprints, but does not record foot or toe prints. In one classic case, however, a toe print was used in court when a burglar broke into a Scottish bakery and left a print on the flour-dusted floor. Though it was the only evidence against the criminal, the jury convicted him within 15 minutes. (These are the two parts of your body that never stop growing!)