Over a period of time various developments have been made in the computer world for making user interaction simpler. From the original punch cards to mouse and keyboards, all the way to track pads, interfaces have evolved rapidly during the last few decades. The use of hand gestures provides an attractive alternative to cumbersome interface devices for human-computer interaction (HCI). In particular, visual interpretation of hand gestures can help in achieving the ease and naturalness desired for HCI. This has motivated a very active research area concerned with computer vision-based analysis and interpretation of hand gestures. Every interaction with the physical world involves some form of physical manipulation, which may be considered as a gesture. The system will capture these gestures to form a touch-free computer interface using techniques from computer vision.