Now, imagine that robots like this can recognize you.

Say the grocery store brand you usually shop has them...

Say you live in Seattle and shop at Safeway. You have a few items you regularly head in for. 

But this week you're feeling prosperous, and head to Newport Rhode Island for a week-long sailing charter.

You go to the Safeway in Newport, and a little bot like this recognizes you, and knows what you usually head to Safeway for.  It knows you're not at home.

It wheels over, greets you by name, and says "Would you like help finding the tenderloin and Grey Goose?"

Hitachi Robot