Password to get access to website, plus encryption key phrase on your local device to unlock your content.

https://www.backblaze.com/backup-encryption.html

https://help.backblaze.com/hc/en-us/articles/217664798-Secur...

https://help.backblaze.com/hc/en-us/articles/217664688-Can-y...

Hmm, good point. Yes, I have to enter the key to use the iOS app. I don't know how that works but guessing it would be better to encrypt then upload... but if they did that I'd have to download then decrypt. Sucks for phones.