Attackers could be listening to what you type. You likely know to avoid suspicious emails to keep hackers from gleaning personal information from your computer. But a new study suggests that it's possible to access your information in a much subtler way: by using a nearby smart phone to intercept the sound of your typing. Source 6l.
This sounds totally ridiculous.
The keypad clicks the smart phone is producing is the same for each of the keys. During the typing, the hacking is not retrieving any detailed information. They can get out of the clicks probably the number of letters in a word, number of words in a sentence.
They cannot depict which letter was typed by the sound of the clicks.