Reading from private S3 bucket

[jkh1]

Is there a way to read from a private bucket? I would expect that in such a case, I would be asked for credentials before proceeding but at the moment reading from a non-public bucket fails with ERROR 403, message='Forbidden'.
Am I missing something or is it simply not implemented/possible?

[sbesson]

Cross-linking to ome/ome-zarr-py#203 where a similar question was raised. From ome/ome-zarr-py#203 (comment) it looks like the configuration might be possible at the level of the underlying fsspec library