An ion implantation system utilizing detected ion induced luminescence as feedback control that comprises, a wafer, a spectrometer, a photodetector, an ion source generator, wherein the ion source generator is configured to implant the wafer with ions, and the photodetector is configured to detect ion induced luminescence both on and off the wafer. The computer-readable medium may store user identifying information and encryption and decryption data. Thus, the driving voltage is minimized without influencing a switching operation of the output transistors. A determination section determines that the pseudo-random number sequence has been embedded when the inner product is greater than a predetermined threshold value.