GPRS/GSM modem is the latest development in the technology. It is a wireless modem unlike the normal modem.It works with the help of the radio waves, whereas the normal dial up modem works with telephone lines. GPRS means ‘general package radio service’ and GSM means ‘global system for mobile communication’. GPRS/GSM modem integrates the data in a quick and easy manner. The data communication is very effective. When done using GPRS/GSM modem? The starting price of this modem is approximately $32.However, it varies with different companies. The advantage of using this modem is that the TCP/IP need not be written, and it makes the internet connection as simple as dialing up a phone number. This type of modem is very user friendly and the power consumption is also very low. The Supply Voltage used here ranges between 3.4 V – 4.2 V, nominal: 3.8 V. The GPRS/GSM modem apart from the general usage, it also helps in vehicle tracking, vehicle locating and so on.