An example method includes presenting, on a first display screen associated with a first computing device, a first graphically encoded display element. The method also includes acquiring, using an image acquisition component associated with a second computing device, one or more images of the first display screen, determining that the one or more images correspond to the first display element, and responsive to determining that the one or more images correspond to the first display element, transferring a data item from the second computing device to the first computing device.