Abacus vs. Technology

Would you believe that abacus still existed and use in some retail store? Yes it does. I first heard the word abacus from Chinese and saw one when I was in grade school as educational materials or tools use in counting. I've seen one also used by Chinese store so I know this system of calculation still existed. Not all business person have adopted the modern technology in computing money and counting I supposed. What is latest today is the use of barcode scanner to make the job faster and accurate. But there are still small stores specially in Asia are using the old ways of computing. They sell goods but they don't use the special codes in the product instead they manually put price on their product. If you own a store what would you prefer to use in scanning the price of each product item?