Too Long; Didn't Read
Scientists from the University of Stuttgart and their colleagues from the Ludwig Maximilian University of Munich managed to identify 90% of 4-digit passwords entered on the screen with thermal imaging. The more complicated the graphic key is, the easier it can be identified, researchers say. A high-resolution camera can easily make a high-quality photo of the fingerprints left on the device’s screen. Fingerprints can be captured by even an amateur camera or a good smartphone. Hackers can also capture your hand movements on your smartwatch or fitness tracker.