Spycam File Transfer

Here’s a scary little proof of concept: an Android smart phone (HTC One XL) with the ThruGlassXfer app on it is held facing the laptop screen so that the phone’s primary camera can clearly read the displayed QR codes.  The codes change rapidly, since they reflect  an encoded file being transferred by light—no connection required.

Displaying binary data as a QR code required encoding the file using ThruKeyboardXfer (TKXf) which in turn required a USB HID keyboard, attached to this theoretically non-connected computer by emulating a keyboard.