[dljsjr]

GrubHub is a service that bolts on delivery to restaurants that may not normally deliver.

This is just a feature where Square-powered stores can offer customers the ability to place an order for a product remotely, and then be notified of when it's ready. At which point the customer can go to the physical storefront and pick up the item. There's no addition of delivery and it's not limited to food.

EDIT: Looks like GrubHub offers take-out services as well as delivery. I didn't know this because they aren't available in my city so I haven't kept up with them.

[guptaneil]

Actually GrubHub is an aggregator of restaurants that offer delivery. You browse GrubHub to find all nearby restaurants that will deliver (or offer take-out), you place your order through GrubHub, and then GrubHub relays that order to the restaurant.

In Square Pickup's case, this is an easy storefront for restaurants to offer their own online take-out interface. It looks like each restaurant gets their own white-labeled website, rather than just being a behind-the-scenes supplier to Square. You go to the website of the restaurant you want to order from and place the order directly with them.