You can share with any other Fulcra user. They need a Fulcra account, but they don't need the iPhone app. They can view what you've shared in Context Web, or work with it through their own agents.
What you share is a slice, not everything. You choose specific data types, or specific files and folders, and you can bound it to a date range so it covers only the period that's relevant. Different shares with the same person can cover different things.
They read it through their own account. They never get credentials to any of your sources.
You can set this up in Context Web, or from the command line if you'd rather: the fulcra share and fulcra file share commands both do this.
To end a share, see "How do I stop sharing my data with someone?"