"The AirDrive Keylogger is an ultra-small USB keylogger,
only 0.8"" (20mm) in length. It can be accessed with any Wi-Fi device such as a computer,
laptop, tablet, or smartphone.
Link: http://www.keelog.com/hardware-keylogger/ »
Features:
-) Records keystrokes from any USB keyboardAirDrive Keylogger
-) 16MB internal flash memory
-) 100% stealthy, undetectable for security software
-) Supports over 40 national keyboard layouts
-) Compatible with barcode readers
-) Works as a Wi-Fi hotspot
-) Connect from any computer, smartphone, or tablet
-) Access data from web browser, no software or app necessary
-) Retrieve data remotely without touching the device
-) Simple and clear WWW interface
-) Supports WEP, WPA, and WPA-2 network security
-) Memory protected by hardware encryption"