The police must unlock a smartphone. Because possibly hints to solve a murder case are on the smartphone. Access to the smartphone is secured by fingerprint and passcode.
But the person whose fingerprint is the smartphone could unlock is dead. For it is the smartphone owner who was murdered. And whose murder will enlighten the police using the locked smart phones.
Therefore appear in the June 2016 police in Anil Jain, a professor at Michigan State University. Jain is an expert in biometric identification methods such as face recognition and fingerprint scanner, as Fusion.net reported.
The police asks Jain that this draws a 3D replica of the fingers of the victim. Thus the police could unlock the phone with this 3D model finger.
The police even has a full scan of the fingerprints of the victim from the time when the victim was still alive. The victim appeared to have been recorded ever fingerprinted, according to Engadget, the man was arrested shortly before his death once.
These scans created Jains laboratory, more precisely its employees Sunpreet Arora, actually 3D replicas of all ten fingers of the deceased. The police needed by all fingers a 3D model because they do not know which finger the murder victim unlocked his smartphone.
But only with a 3D model alone can not outsmart most fingerprint sensors. Since these sensors are usually designed capacitively and therefore require a closed circuit between the sensor and finger. Therefore, the laboratory of Jain covers the 3D fingerprint model even with a thin metal layer which conducts electricity.
But as easy as the whole thing reads now, it is not in practice. Sunpreet Arora needs a few weeks until the 3D model is perfect. Only when the model has passed some tests in the laboratory, Jain wants to ask the police for disposal. In order for this to finally crack the smartphone of the murder victim. If it works, it would be the world’s first case has become known in which a smartphone is unlocked with the 3D model of a fingerprint dead.
An additional problem, however, can still occur: Some modern smartphones are obviously configured so that they additionally require a successful fingerprint input a passcode. Namely, if the fingerprint was at least 48 hours is no longer used to unlock. What sort of smartphones it concretely is in this case, is unknown.
This case evokes memories of the; iPhone 5c of the two San Bernardino assassin; then, the FBI Apple asked to assist in unlocking the iPhone. Apple should then install a backdoor into the iOS system said iPhones. Apple refused. The FBI made the iPhone after weeks of wrangling finally crack by hackers. And it paid more than one million US dollars.