The aim of this work is to develop such a methodology whose implementation help the companies, institutions etc to easily communicate with another person without any cost. This gives a new dimension to communication. Our system is competent without GPRS or Telecom service providers. Free of cost communication with the help of this system along with some enhanced security features which will provide a hassle free and safe communication. Person often wants to share mobile data like images, videos, etc. to our distant friends. This technology removes the overhead of copying data to PC/Laptop then sends over the internet and reverse process on the other hand. Whether the person is in car, train or anywhere else and he/she has Bluetooth enabled mobile phone and Laptop then the person can transfer any urgent data to any person who also fulfills such requirements. To accomplish our task we have successfully implemented the communication, using messages and voice mails, and media/data file transfer. Our design is based on request-reply architecture. We have also implemented an access control mechanism that allows user to receive services from everyone except for the members of the blacklist. This is necessary as the service involves virtually no cost. To authenticate the sender currently we are using a PIN number because to detect the IMEI number of the cell phone our mobile application must be digitally signed by the mobile vendor.

Bluetooth Wireless Java Mobile Technology