I have a usb device which reads rfid tags. On my window pc I have a program which takes the code from a scanned chip and sends it as a 12 character string to whatever program has the keyboard focus. I need to accomplish the same result on a mac running OS X 10.8 I can read the input from the device from /dev/cu.SLAB_USBtoUART, and have written a command line objective-C program that massages the input to remove the extraneous info and sends the required 12 character code to stdout. How to I get the system to treat the output from this program as keyboard input? The end result that I want is for the scanned code to be entered into a form field in a web browser running on the mac with a return so that when an rfid chip is scanned, the web brewer submits a form with that chips code.