Hi Jean-Marc,
currently there is no built-in support in Felgo Multiplayer to detect which users are online. You could do this on your own using external database (we are going to release a Firebase plugin very soon where you can do this). Or we can add it to the multiplayer solution – please contact us via support@felgo.com for a qutoe for this.
You can use different profiles on the same device by manually changing the deviceId of a GameNetworkUser. The deviceId property is not publicly documented, however, you can see how we do this in the One Card source code, where we alternate between 4 players in debug builds with this code:
VPlayGameNetwork {
// set the deviceId to whatever you like
user.deviceId: system.UDID + "_" + "optionalName"
}
Out of interest: why would you like different profiles per device?
There is still the option to let your users connect with Facebook, in which case they get the same userId across devices & platforms.
Cheers, Chris