This app allows users to scan for all the nearby BLE devices.
Users can define the scanning duration, the default duration is 0 (which means the smartphone will scan continuously). Users can stop the scanning operation by clicking the stop button.

During the scanning, the smartphone will log the following information into the temporal memory:
1. device name
2. device Mac Address
3. the packet payload
4. the signal strength
5. the detected time.

Users can later choose to save the data in .csv file and export it for further data analysis.
The save Button will be enabled after the scanning.

Update:
1. improve the interface on the scanning page
2. add conversion page that allow conversion from dBm to mW, and vice versa.
3. add a main page to provide better navigation