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Your smartwatch can reveal your ATM PIN
Cyber criminals can easily exploit wearable devices such as smartwatches and fitness trackers to steal sensitive information like your ATM PIN or passwords for electronic door locks, warns a new study presented at the \"11th ACM on Asia Conference on Computer and Communications Security\" conference in China recently.
Cyber criminals can easily exploit wearable devices such as smartwatches and fitness trackers to steal sensitive information like your ATM PIN or passwords for electronic door locks, warns a new study presented at the "11th ACM on Asia Conference on Computer and Communications Security" conference in China recently.
"Wearable devices can be exploited. Attackers can reproduce the trajectories of the user's hand and recover secret key entries to ATM cash machines, electronic door locks and keypad-controlled enterprise servers," said Yan Wang from Binghamton University in the US.
The researchers combined data from embedded sensors in wearable technologies such as smartwatches and fitness trackers, along with a computer algorithm to crack private Personal Identification Numbers (PINs) and passwords with 80 per cent accuracy on the first try and more than 90 per cent accuracy after three efforts.
The team conducted 5,000 key-entry tests on three key-based security systems, including an ATM, with 20 adults wearing a variety of technologies over 11 months. They were able to record millimetre-level information of fine-grained hand movements from accelerometers, gyroscopes and magnetometers inside the wearable technologies regardless of a hand's pose.
Those measurements lead to distance and direction estimations between consecutive keystrokes, which the team's "Backward PIN-sequence Inference Algorithm" used to break codes with alarming accuracy without context clues about the keypad. "The threat is real, although the approach is sophisticated," Wang said in the paper presented.
The researchers did not give a solution for the problem but suggested that developers "inject a certain type of noise to data so it cannot be used to derive fine-grained hand movements, while still being effective for fitness tracking purposes such as activity recognition or step counts". Wang co-authored the study along with Chen Wang from the Stevens Institute of Technology in New Jersey.
