Android Question pairing device

Question is not clear. Pairing is a Bluetooth concept. It has nothing to do with wifi connection.

Wifi/Network: https://www.b4x.com/android/forum/t...-asyncstreams-b4xserializator.119011/#content

BT: https://www.b4x.com/android/forum/threads/android-bluetooth-bluetoothadmin-tutorial.14768/

I use both with my ESP32's. RaspBerries will do, to. Of course you need to adapt the code a bit.

Well imagine that communication between the application and electronic device is local type with Wi-Fi module. As well there a lot of such electronic device numbered 1, 2, 3 and etc.
I need to pair my mobile application with one of those devices not with all of the devices. I mean any command from the application should not affect other devices.
What should I do then. May be name of this action is not pairing but that is somehow the same as pairing in Bluetooth.