News for hackers. Stuff that matters.

A comment on Hearing your touch: A new acoustic side channel on smartphones.

Re:Hearing your touch: A new acoustic side channel on smartp... by sytelus on Friday June 07, 2019 @04:49AM (#20122772)
Pretty cool paper: they train LDA model to predict password from sound of taps with 61% accuracy! This required background app running on device with access to microphone. The obvious extension is to predict password from video clip of someone entering it!
[ Parent | on HN ]
Re:Hearing your touch: A new acoustic side channel on smartp... by nine_k on Friday June 07, 2019 @04:34PM (#20128343)
The front camera has very little chance to register any finger motion on screen, though.

Adding accelerometer (tilt / shift) data could help a little bit, because it's correlated to the motion of typing hands, too.

[ Parent | on HN ]
Re:Hearing your touch: A new acoustic side channel on smartp... by JeremyBanks on Friday June 07, 2019 @04:41PM (#20128412)
It helps quite a bit. The relevant web APIs were retroactively rate-limitied to mitigate these risks.

https://bugs.chromium.org/p/chromium/issues/detail?id=421691

https://arxiv.org/abs/1410.7746

[ Parent | on HN ]
Re:Hearing your touch: A new acoustic side channel on smartp... by jasonhong on Friday June 07, 2019 @09:45PM (#20130096)
There were 3 research papers that came out around 2012 (almost simultaneously) that looked at using accelerometers to infer what people were typing.

Here is one of them, I don't recall the other two. https://dl.acm.org/citation.cfm?id=2162095

[ Parent | on HN ]
Re:Hearing your touch: A new acoustic side channel on smartp... by malka on Saturday June 08, 2019 @05:23AM (#20131467)
It could look at your eyes to infer wich key you are pressing
[ Parent | on HN ]
Re:Hearing your touch: A new acoustic side channel on smartp... by shostack on Friday June 07, 2019 @08:45PM (#20129858)
Honestly, I'd really prefer that to all the times when I have slightly damp fingers an my fingerprint sensor is not registering, or it is causing issues with swiping.
[ Parent | on HN ]