-183-
v7.3
Smartphone detection
Meshlium
X
treme
14.3. Bluetooth Scanner
14.3.1. Concepts
This Bluetooth radio integrated in Meshlium Scanner allows to scan Bluetooth devices in a range of action up to
200m depending on the line of sight conditions.
The idea is to search for Bluetooth devices in a defined interval which can be configured. Meshlium will get the
MAC address
, the
Bluetooth ID
and the
RSSI
of the devices along with a
timestamp
which identifies when the
scan was performed. For this reason it is important to set the correct time in the System before starting with the
storage of the data. See the Time Synchronization in the System section.
Other interesting parameters the system also detects are the
Class of Device (CoD)
which allows us to differentiate
the type of device (smartphone, hands-free, laptop, LAN/Network AP) and the
Vendor
of the Bluetooth devices
using its MAC address.
With these parameters we can differentiate among pedestrians and vehicles.
B ID
Timestamp
MAC
ID
RSSI CoD
Vendor
45400 2012-05-16 16:18:1207:56:25 00:26:7e:5f:3c:18
myCar
-72
Handsfree
PARROT SA
78005 2012-04-20 12:59:27 09:11:26 D8:2A:7E:0E:C3:10 Tropic
-85
Smartphone Nokia Corporation
We can configure the Scanning Type which specifies the use of our Bluetooth Scanner:
•
Indoor type is recommended to scan static devices or devices with slow movement (offices, malls, etc). This
option retrieves device names after about 15 seconds scanning.
•
Outdoor type focus on devices which stay a brief period of time in our Bluetooth action range (roads,
highways,...). This option does not ask the device name and the scanning period is about 45 seconds.
In both types, there is a second between two consecutive scans.
Figure:
Configuring Bluetooth Scanner
We can also activate the anonymization of the MAC addresses. This option will store the MAC address encoded
with an MD5 hash. The hash will be consistent in the same day, but will change from one day to another. This
system allows to follow a particular user in the same day, but keeps the privacy of the user, not storing the real
MAC of the device and not allowing to track a user more than one day.
From this section the user can start and stop the service from the button next to the status indicator.
Figure: Bluetooth Scanner was stopped