> 1. my phone is on and does a secure key exchange each time I login on desktop, in which case I have to carefully audit complex novel crypto or trust that FB d

> 1. my phone is on and does a secure key exchange each time I login on desktop, in which case I have to carefully audit complex novel crypto or trust that FB doesn't snoop the key during the exchange. This isn't a usability tradeoff, is it? If you don't care that your messages are in clear text, then I don't see why you would then be forced to audit how their crypto works to be sure that it works so that you could then use that crypto for messaging. I don't audit how my web browser uses ssl, do you? > 2. I have to scan some QR code or some other bullshit to make desktop chat work. > And more importantly, it's possible for me to lose my message history if I lose all my devices. Yea, these do seem like potential usability issues and I could see these being valid reasons for them not wanting to roll it out. That being said, they are facebook and they have a ridiculous amount of engineering talent to apply. I would be really curious to know why they think they can solve the problem well it in a few years but not in a shorter time frame or if they don't think they can achieve it in a few years and are just kicking the can down the road in the hope that everyone forgets about the can later.