Answer: fingerprints

AnswerCrossword Clue
FINGERPRINTSCertain clues
FINGERPRINTSThey may get a dusting
fingerprintsAn impression or mark made on a surface by a person's fingertip, esp. as used for identifying individuals from the unique pattern of whorls and lines
fingerprintsA distinctive identifying characteristic
fingerprintsFINGERPRINT, an impression of the ridges of the fingertip