-175-
v7.3
Smartphone detection
Meshlium
X
treme
Anyway, in the case of sending 802.15.4 frames from Waspmote or Plug & Sense! to a Meshlium Scanner
equipped with XBee-PRO 802.15.4, it is recommended to perform re-tries in the sender application,
just to minimize possible interferences and ensure a good percentage of received frames in Meshlium.
Figure: Bluetooth, WiFi and ZigBee radios coexist
Under which conditions do you get a 95% detection rate of devices?
A set of conditions must be respected to keep the detection rate high.
The devices to be detected must be some meters away from the Scanner and must remain some seconds inside
the coverage area to give time to the system to detect them.
The setup of the WifiScan feature in Meshlium is 40 seconds of scan span. This means Meshlium Scanner listens
for 40 seconds and then stores the results of the scan.
Android and iOS devices have a special option to disable WiFi connection when the user locks the screen in order
to save battery. All cases are studied here. This option changes with the iOS version, but will be present in the
majority of iOS devices. It makes iOS devices difficult to detect: the device is not undetectable, but it would need
several scan cycles to get one beacon.
When a device is connected to a WiFi Access Point it is easier to detect, as it needs to send radio packets to allow
communication.
Содержание Meshlium Xtreme
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