chapter 1 Introduction 4

1.3 Advantages
 Low cost.
 Compact systems.
 Flexible to users.
 It takes less power to operate system .
 it Can be used to do different tasks like control appliances,
control the users robotic wheelchair etc.
 Faster than the camera based 'image processing' technique of
sign to text conversion.
 Battery operated and safe to use.
 Portability: can be used anywhere.
 Sign language.
 Controlling on-off Applications.