[alalonde]

Thank you for the technical details. Probably a bit late for you guys, but we offer a BaaS tailor-made for this sort of product. For instance you could add multiple mouse tracking and selection awareness in a matter of hours with our APIs. Check out our diagram demo for a taste: https://convergencelabs.com/demos/

[tomyip]

Amazing! Will surely be keeping an out out for you guys as our requirements may change.