This would benefit a user who uses a dock on startup, or has an extremely long passphrase for the owner profile that cannot be brute forced. If they have a keyboard or another device responsible for typing the key, they can use that instead.
Some USB keys may have features to store a password in them and type them when used in a certain way. Since the phone only would accept the accessory in a BFU state there is not much added risk.
Interesting, thanks.
I'd guess that this is a small part of the user base, so a more secure default might be fine.
This is still being looked on as it's a new feature and overall feedback is required, we don't want to have added confusion by people wondering why their accessories wont work at all. Users sadly still mix this up even with the older accessories toggle we have. Currently it's set to On but either Charging-only when locked or Charging-only except BFU would be a default in the future.
Charging-only with BFU exception and Charging-only have almost the same benefit since the BFU device is still entirely encrypted. Although, charging-only would definitely be the way for someone who doesn't use any accessories at all. Stricter modes like Off are for people who consider any situations with access to the phone's USB port when powered (like a seizure risk) as an unacceptable threat.
Charging only when locked with BFU exception and charging-only when locked*
What a tongue twist.
