Visible to the public WristSnoop: Smartphone PINs prediction using smartwatch motion sensors

TitleWristSnoop: Smartphone PINs prediction using smartwatch motion sensors
Publication TypeConference Paper
Year of Publication2015
AuthorsSarkisyan, A., Debbiny, R., Nahapetian, A.
Conference Name2015 IEEE International Workshop on Information Forensics and Security (WIFS)
Date Publishednov
Keywordsaccelerometer, Accelerometers, gyroscope, gyroscopes, keystroke inference, Malware, mobile malware, mobile security, motion measurement, numeric keypad entries, p-i-n diodes, PIN prediction, Pins, pubcrawl170115, security risks, Sensors, smart phones, smartphone PIN prediction, smartwatch motion sensors, smartwatches, Vegetation, watches, wearable computers, wearable computing, WristSnoop

Smartwatches, with motion sensors, are becoming a common utility for users. With the increasing popularity of practical wearable computers, and in particular smartwatches, the security risks linked with sensors on board these devices have yet to be fully explored. Recent research literature has demonstrated the capability of using a smartphone's own accelerometer and gyroscope to infer tap locations; this paper expands on this work to demonstrate a method for inferring smartphone PINs through the analysis of smartwatch motion sensors. This study determines the feasibility and accuracy of inferring user keystrokes on a smartphone through a smartwatch worn by the user. Specifically, we show that with malware accessing only the smartwatch's motion sensors, it is possible to recognize user activity and specific numeric keypad entries. In a controlled scenario, we achieve results no less than 41% and up to 92% accurate for PIN prediction within 5 guesses.

Citation Keysarkisyan_wristsnoop:_2015