> Matthew Hodgson, the cofounder of Matrix, which is building an open source standard for encryption and operates the messaging app Element, confirms that his company has worked with WhatsApp on interoperability in an “experimental” way but that he cannot say any more due to signing a nondisclosure agreement. In a talk last weekend, Hodgson demonstrated “hypothetical” architectures for ways that Matrix could connect to the systems of two gatekeepers that don’t use the same encryption protocols.
https://www.wired.com/story/whatsapp-interoperability-messag...
Matthew also did a Fosdem talk about it about a month ago: https://fosdem.org/2024/schedule/event/fosdem-2024-3345-open...