Mantra Biotime4 is a full featured lowest cost device with excellent matching speed of around 1000 fingers per second. Mantra Biotime4 has achieved lowest FAR and FRR in a testing as compare to other 8 devices available in the industry. Traditional USB Pen drive backup are now susceptible to virus and other spyware so Mantra Biotime4 comes with a SD card facility which is used only for BioTime4 backup / restore and data transfer options. So making it the most secured device available in the market.