Vol 4 Issue 2 April 2016-June 2016

Abstract: The project discussed here is a Bluetooth messenger application which connects using Bluetooth. The main concepts discussed here are: i) Bluetooth connection between a PC and an phone, whereby the user can update and synchronize his/her chat with the PC from time to time.ii) Multiple language chating system whrere messages can be send in multiple languages. iii) Data structures used in storing and updating the data (messages) for respective usernames. iv) State machines and finite expressions used to achieve robustness, thereby delivering error free messages. This whole project has been designed using java programming language and xml. Threads are used to synchronise the messages. Some methods used for synchronisation are wait() and notify(). This app doesn’t require an internet connection rather uses the in-built Bluetooth hadware and software in the phone. Hence it is a low cost communication and it comes in handy for free of charge short distance communication between individuals within a certain range (30 or 100 ft, depending on the hardware). Keywords: Bluetooth, Messenger, Java, Short distance communication. Title: Multilingual Bluetooth Chat Author: Suryadeep S Sahu, Aniket R Sonavane, Deepak Kumar, Monali Deshmukh International Journal of Computer Science and Information Technology Research ISSN 2348-1196 (print), ISSN 2348-120X (online) Research Publish Journals

Abstract: The increased popularity and use of smartphones, has lead to the increase in the number of social networking applications that leads to increase in threats to apps. Among threats to apps repackaging of apps is the common threat. To overcome this, we propose an mechanism that use watermark for the android apps. Watermark can used to determine ownership of code and prevent tampering of source code. We embed a picture based watermark into the app using some events. When we need to verify an originality of an app, we should verify the watermark of an app, for that we should first extract it from the app and check with that of the watermark of the original app that the author supplies. To do this, we need to run the app with the secret input that the author supplies. This is simple and efficient mechanism. Keywords: Repackaged app, watermark, events. Title: Smartapp: An Efficient and Effective App Based on Watermark for Smartphone Author: Amitha Babu, Veena Jacob, Annie Chacko International Journal of Computer Science and Information Technology Research ISSN 2348-1196 (print), ISSN 2348-120X (online) Research Publish Journals