Bluetooth device permission
First of all, use a device support Bluetooth android. Then open it on the condition and allow permission to connected other Bluetooth device or devices to share data for communicating. When one device is on than others should be on condition. One user can verify the other device or devices then he/she can connect to share data. One user can send a request to the other user then the other user can verify the first user is same then he allows permission to communicate with each other to share data exchange data.
Data exchange rate may be different at different places. To avoid these difficulties devices should be nearby to each other. The first user sends a security message for encryption. Another user can receive this message and then verify it for communication purpose. Now both devices are connected to each other for share and exchange data.
Bluetooth admin send request
When the first user can send a request to the other user for communication he sends a code to verify that devices are authenticated then the other user can allow adding this device in our system. IT is the simple way to communicate but in this project first user can send the request to the admin then admin can allow to communication to the other user. If an admin cannot allow communicating then he cannot communicate with other devices.
Bluetooth admin response
If the admin does not except request then his devices cannot be connected to the other devices. If an admin can allow communicating then he can connect to the other devices. Now he can share data to the other device or transfer data to the other devices. Now they connected to one or more devices to communicate. At a time Bluetooth can connect one or more devices. In this way, a company can create a local area network and save money to communicate because Bluetooth is used free of cost.
Bluetooth specified area
In this Bluetooth has its own specified distance in which he connected. Bluetooth can connect 800-meter distance without any rustication. Bluetooth distance when rustication then only 10-meter distance. Indoor distance is very low but outdoors distance is very high. Indoors distance is 10 meter which is connected only a single room. Outdoors distance is about 800 meter in which Bluetooth devices can connect to share data transfer files for communication with each other.
Bluetooth speed
We increase Bluetooth data share or transfer files up to double than the last version. In the previous version, Bluetooth share data rate is about 1mbps. But the new version Bluetooth share data rate is about 2mbps. Which is double than the last version. Speed of Bluetooth is increased double than the previous version. Last version data share can get more time to data rate but in this version data rate is increase. We can save our time to share data than the last version.
Bluetooth range
We increase range up to 4 times then the last version. In the last version, Bluetooth 4.2 has 500 meters to connect the Bluetooth device. But in the new version, Bluetooth version 5.0 has an 800-meter range in which a Bluetooth can connect a device. It is a local area network which is benefits for a company or organization which is connected local area network. It is free of cost then makes it effaced then the other.
XML for Bluetooth
We used XML (language) for coding to create a Bluetooth app for communication. The XML (extensible markup language) we can store or share using XML. We can enter many tags in the XML (language).
JAVA for Bluetooth
We used java (language) for coding to create an android app. JAVA is an objected oriented programming language. If we lose data type then we create an object type program. Java has its own features. James Gosling was developed java in 1991 Sun MicroSystems company was designed.
Database SQLite
We used the offline database SQLite. SQLite is a simple and lite database which is shifting our android application. It is a simple data base which creates simple data files our project.
RSA Algorithm (cryptosystem)
RSA (Rivest_Shamir_Adleman) is designed in 1977. It is used for a cryptosystem. It is asymmetry algorithms. The first public key is a cryptosystem for data transmission encryption key is used for the public which is different from decryption key. The decryption key is a private (secret key).
Which is used to only the other user who knows us the private key? Seven steps are used in these algorithms. First encryption data then decryption data then forward to the next person then decryption it and used private key to encryption data now can get in original data.
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