I the code I see things about the “raise your hand” signal. Is that some sort of heartbeat? Is there a heartbeat? Is there any relation to the handshake? It would be great if there was guide to how it all works.
I think it’s a bit of an Easter Egg, so documentation is sparse. That said, it’s in the ParticleJS library, and the appropriate calls can be deduced from there: https://docs.particle.io/reference/javascript/#signal