Three researchers at Binghamton found that cameras have a pattern noise and if you look closely enough you can find that there is a difference in the pattern noise of the algorithm of each camera even though they're mass manufactured.
Ūrír rannsakendur uppgötvuđu ađ myndavélar hafa mynsturskvaldur og ef rũnt er náiđ má finna mun á mynsturskvaldrinu í algrími hverrar myndavélar. Ūķtt ūær séu fjöldaframleiddar er örlítill munur á hverri um sig.