Researchers, Kai Cao and Anil K. Jain at Michigan State University have found a way to unlock a smartphone protected by a fingerprint, by using an inkjet printer. They used a special conductive ink and paper made by a company called AgIC. To unlock the smartphone the fingerprint of the user has to be scanned at a resolution of 300dpi or higher. Before printing, the image of the scanned fingerprint needs to be reversed.
The researchers used Samsung Galaxy S6 and Huawei Honor 7 smartphones for testing, and managed to unlock both of them by using this technique. As per statement of Kai Cao and Anil Jain, "Honor 7 was slightly more difficult to hack than the Galaxy S6".
How these reseachers managed to fool smartphone fingerprint? Watch in this video.
