I went with a girlfriend to her small-town-CA home, about 15 years ago. Went to get groceries and she just gave their name and a 3-digit number and the groceries went on the family account. I'm 40, but I had never before seen that in my life.
Given the demographics of Woodside, it’s also frequently used by nannies and other family helpers who shop for the uber-wealthy residents who call Woodside home…
Accounts were typically settled at the end of the month. The system is predicated on trust and customer service.