It might have observed at various places where numerous counters are there, you are always confused as to which queue you should select to get your work done. In usual cases you select the smallest queue and end up leaving the counter late.
By utilizing this system the inordinate delay in transacting your business can be overcome since you need not have to stand in any queue.
You can deport after finishing your job much earlier than expected. This is again very highly useful and cost effective project.