We've just released (in stable) the shared cart, a feature which allows more than one customer to add, remove, or update items or data of a single shopping cart. That way orders may contain more items, leading your store towards operational efficiency, while users can get together to get discounts.
With the shared cart, your clients will be able to share their shopping cart before completing the purchase. That means more people can view, add, or remove the cart's items.
Sharing becomes possible through a new parameter in the shopping cart's URL. And by using it, people can team up to get discounts available only to orders that include a given number of items. On the store's side, there's an improvement in the operational efficiency with:
More than that: your call center operators may select products and share the cart with a client. Then, the person will fill in personal data, without the need to inform sensitive information (like the credit card CVV) by phone.
Sensitive information, like user data and address, is only visible to its real owner (and they must be logged in). Whoever receives the cart's link won't be able to read the data, which will be masked.
The shared cart is only possible because of a new parameter on the checkout's URL: the orderFormId. So, if you decide to use the feature, you need to:
Read the article about the shared cart and learn more about this new feature.