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[Facebook] Messenger is finally getting end-to-end encryption by default - The Verge
(www.theverge.com)
This is a most excellent place for technology news and articles.
Is it going to be like Whatsapp end-to-end encryption where they just rolled out a 4-digit pincode for "backups" on their servers as the third end?
It sounds like it, although it looks like it's a 6-digit pin instead from the image in the article.
There's also this additional info directly from Facebook's blog post about all this:
WhatsApp is using the Signal protocol for E2EE chats
Is your issue that it's 4 digits, or something else?