Since dav4android ff40bfd, credentials are cached for Digest authentication, too.
Subscription to multi-contact resource / .ics but for contacts?
I am not aware of any standard way of doing this (there are programs that do multi-contact export in *.vcf), nor do I know whether this would be a topic for DAVdroid or ICSdroid.
Do you know of any way, to share multiple contacts via a (password-protected) URL, that can be synced to android contacts (obviuosly read-only)?
Application could be: export of centrally managed customer contact info’s, export of corporate mail directory, …