Scenario1: someone is in a queue of people in a supermarket for hours, and want to share their frustration. They can just take a picture of the situation and publish in the "Wall" of zone of the supermarket. So, other people, that are thinking on going to that supermarket, can go to the "Wall" of the supermarket and read what the users are saying about that place, and make questions…
Scenario2: you are going shopping and want to know if there's any neighbour, in the building, that belongs to the "risk group" who might need that someone go shopping for them. All you have to do is to publish "going shopping. Does anyone need something?", and define the range of you publication. So any user in that range will see your publication.
The main idea is to create a social network, just like Facebook or LinkedIn, where the publications are bonded to certain geography. So users can see what's happening in a specific place (what the users that are there are sharing, or even make questions to them) without the need of being there physically, helping the " social isolation" that the authorities are recommending.