P-ISSN: 2347-4408 E-ISSN: 2347-4734 1| Page June 2015, Volume - 2, Issue - 3 SENSOR BASED AUTHENTICATION USING ACCELEROMETER SENSOR Mr. B.Premanand 1 , Mr. T.Prabahar Godwin James 2 1 Assistant Professor, Department of Computer Applications, Sri Sairam Engineering College, West Tambaram, Chennai, Tamilnadu, India. 2 Post Graduate Student, Department of Computer Applications, Sri Sairam Engineering College, West Tambaram, Chennai, Tamilnadu, India. Abstract— In Some Application or Web services Password offer their users lots of possibilities and a feeling of freedom. Eventually, this cause some new security threats like Sensitive data might be stolen and abused, person who is not authorized can gets access to such password. In that case, user authentication mechanisms is coming into the picture. So far authentication mechanisms like PINs and passwords (OTP) do not take into account the limited capabilities of user interfaces of mobile devices. Those mechanisms (OTP) are easy to implement, computational inexpensive and often use already available capabilities of the user interface. They have several drawbacks regarding usability. The genuine user needs to memorize an arbitrary and complex secret, which he can recall precisely. It is important that a secret is not guess- able by other persons and therefore might be hard to remember. So, it is necessary to create and develop specially adapted mechanisms, which are designed to be usable under these restrictions. In this Paper Sensory-based authentication mechanism for handheld mobile devices (Android) is developed and evaluated. 3-Dimensional rotation is used for generating the OTP by using its coordinates values, which has potential keys pace to provide more accuracy and efficiency. Keywords:-OTP, 3-Dimensional, Sensor, Mobile Device (Android), Key space 1. INTRODUCTION ACCESS control is a mechanism that enables an authority to control access to restricted areas and resources at a given physical facility or computer- based information system. This authentication framework is adaptive to the change of encryption complexity of the access control systems and could be adopted with minor modification of existing infrastructure. Individuals are authenticated in these access control systems if and only if the blade of the key matches the keyway of the lock or the correct numerical sequence for combination lock has been entered. Due to the physical constraints of mechanical matching systems, they are insufficient to meet the demanding requirements of access control authentication for critical infrastructures. The other categories of authentication are electronic authentication including barcode, magnetic stripe, biometrics, and so on. Compared with mechanical matching authentications and voice recognitions are able to provide personal identification, they have high infrastructure cost and access privileges cannot be transferred among trusted users. In this Paper, we aim to overcome the security complexities by implementing authentication mechanism. 2. EXISTING SYSTEM Existing authentication schemes already have various properties, potential risks and inefficiency such as security risks in unauthorized access of control system and inefficiency in processing OTP for large number of users. Whenever processing multiple request form user OTP server gets load. Because of this process there is increase in overhead to access the control system. 2.1 DISADVANTAGES Inefficient key space Separate OTP server is needed Access privileges cannot be transferred among trusted users Authentication accuracy is low. 3. PROPOSED SYSTEM Here Sensory data is extracted from the user side, and the accelerometer sensor is used to extract the sensory information of the android mobiles based on the motion of the mobile. The coordinates value of X,Y,Z axis which produce 3-dimensional rotation axis. Using the android API the sensor event is triggered and the sensor values are extracted in F- Vector, which is similar to the data type to store the coordinates value and the values are matched by F- Vector matching to generate the Enhanced Sensor Data, which can be used as a OTP dynamically at the authentication. 3.1 ADVANTAES Secure Registration and Recovery Less computation overhead. The potential key space increases with sensory information Key space by more than 1, 000, 000. Authentication accuracy of 90%.