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 on

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 https://dl.acm.org/citation.cfm?id=2162095