About a year ago, I bought my parents a Phillips digital frame with wireless which (8FF3WMI) could read directly from a feed with no third party software. As long as you don't use the URL anywhere else, no one will be able to find it.

I built a small web interface for it where we can all upload pictures. My family is in different parts of the world so it's nice to send the pictures right into my parents' living room with two mouse clicks.

The frame re-scans the feed about every 10 minutes.