Cryptographic engineering researchers from the Nanyang Technological University (NTU) have developed proof-of-concept software to access data from common phone sensors that track the phone's motion and orientation, which can then be reverse-engineered to guess the user's PIN.
This means hackers can write malicious apps that take advantage of this loophole to log sensor data secretly without the user's knowledge. That app can then transmit the raw data to the hackers.
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