The proposed system is designed to determine whether the person signing on any touch screen device is authenticated user or not. This can be done by verifying his/her handwritten signature which is a socially accepted biometric trait for authenticating an individual. There are two types of handwritten signature verification systems: offline and online systems. In an off-line system, just an image of the user?s signature is acquired without additional attributes, whereas, in an online system, a sequence of x-y coordinates of the user?s signature, along with many other attributes are also acquired. In our paper, we have created a client (mobile) application which captures the user?s signature and extracts various features like pressure, time and x-y co-ordinates and the server application verifies these features to find whether the signature has been done by an authenticated user or a forger. The implementation is done using Python and the GUI is coded using Xcode
