The USB Lock is a Patented physical solution to stop physical keyloggers. This patented device locks your keyboard or credit card reader cord into the USB port on your pc or mac, stopping would be data thieves from installing keylogging devices, and keeping your passwords safe and secure. Unlike software based malware and ransomware, hardware based keyloggers aren't detectable by programs designed to protect your data. ...It's EASY to imagine the disastrous results caused by an adversary who secretly has your email, banking, facebook, or workplace passwords. Lock your keyboard or credit card reader into your computer and stop anyone from plugging in a USB Key Logger.