Patent attributes
In some examples, a buyer device is configured to present a first graphic user interface (GUI) including information about items available from a first merchant site. The first GUI may further include a virtual control for adding a selected item to a persistent virtual cart maintained by a service provider. The buyer device may be navigated to a second merchant site to present a second GUI that may receive a selection to cause a second item from the second merchant site to be added to the persistent virtual cart. The buyer device may present a cart GUI for accessing the persistent virtual cart. The cart GUI may be used to send an instruction for ordering the items associated with the cart, causing the service provider to send an order for the first item to the first merchant and an order for the second item to the second merchant.
