In the Backbar mobile app, you can use a bottle slider to count opened and partial bottles. This provides a more accurate count for opened containers.

When adjusting the bottle slider, the quantity counted will update in increments of .1. For a half-full bottle,  move the slider to halfway point on the bottle image and the count will be saved as .5. You can add additional bottles or cases to the slider count. These counts will be added up to give a total item count