It is certainly possible to make it harder to gain access to the data. But it has to weighed against the ease of using it. If it becomes to cumbersome, the likelihood of taking shortcuts greatly increases.
I am not storing NSA secrets or company financials. Just family photos, documents, and a few personal keys and certificates. But I'm disliking the thought of someone possibly gaining access to it.
What are some manageable ways for me to protect my data if my home computer and/or backup NAS gets stolen?
Update: Full disk encryption seems to be the answer. I have all my personal files on the D drive, is it enough to just encrypt that?