@sh.abar.mard This is something you should be able to test yourself with a household of 5 phones
I only have two active GPS capable phone/tablets running for my test, and they both sit on the same bench next to each other, so while they are different it is not by much, so makes checking a bit more nit-picky
The GPS Streaming widget gets its info from the phone and passes it onto a Vpin. But by comparing the value of the Vpin shown on my PC (via a android emulator, running Blynk) to a separately running GPS app on each phone/tablet device, it seems that the value of that Vpin will fluctuate depending on which phone/tablet updates its Blynk app last (is app running in foreground/background, actively being poked at, etc).
So, I would say that the GPS widget, as is currently is deployed, will not be ideal for any specific phone based locational needs when multiple devices are running the same project.
@Dmitriy - When running multi-phones per project, would there be a way of toggling a "master" device for each of the sensor widgets that pull phone sensor data? (via IMEI or other device specific ID)
E.g. you only want GPS Streaming from phone A but need the Barometer from phone B and the Accelerometer from phone C, but all displayed in one project.
Is this a worthy GitHub request?