This project seeks to exploit the unique acoustic properties of individual keypresses to log keystrokes of a computer user without physical or digital access to the keyboard itself. Past research has been conducted in this area, showing that this type of attack is possible. However the focus of many of these studies were to show that this attack was feasible, as such, unrealistic scenarios were considered where a studio quality microphone was used and the sound was recorded in a noise-free recording studio. The focus of this project is to show that this side channel attack is practical. We will construct our own small, low-power, wireless sensor package capable of accurately logging keystrokes via an acoustic side-channel attack.