Your first Emotiscope has been added to the WiFi network
Your second Emotiscope still doesn't have the WiFi password
Because of this, it occasionally broadcasts a "EMOTISCOPE_PROVISION_REQUEST" message using ESP-NOW
Your first Emotiscope which already has WiFi creds hears this message
The connected Emotiscope broadcasts a WS packet to your app
This packet contains all mac addresses and types of Emotiscopes which have asked to join
The app notifies you of more Emotiscopes trying to join the network
You can either block or accept individual units, in the freak case where your upstairs neighbor is setting up their Emotiscope at the same time
To help identify which is which, you can tap an "identify" button next to each available Emotiscope
This causes the app to send a message back upstream to the ESP-NOW neighbor: "IDENTIFY"
The identified Emotiscope will briefly flash yellow on its screen.
Once accepted, your first Emotiscope quickly shares an encrypted copy of your WiFi creds over ESP-NOW to the neighboring device, which then attempts to join the network.
Theory: