'Shift' For Touchscreen

Microsoft has come up with 'Shift' to deal with the problem of fingers covering targets on touchscreen devices.When the user touches the screen, Shift creates a callout showing a copy of the occluded screen area and places it in a non-occluded location. The callout also shows a pointer representing the hotspot of the finger. Using this visual feedback, users guide the pointer into the target by moving their finger on the screen surface and commit the target acquisition by lifting the finger. Over large targets, in contrast, no callout is created and users enjoy the full performance of an unaltered touch screen.

Source: Small Surfaces