Aventura Police Department said that Nordstrom discovered a total of six devices attached to its cash registers. The devices were connected in series between the keyboard and the computer and likely had 4MB or more of on-board storage to record data. It is unknown if the men ever returned to the store in order to retrieve the keyloggers and Nordstrom are unaware of any arrests being made. While the devices look like they are designed to log keystrokes from an attached keyboard, they could also be used to steal credit card information.”]