The world’s smallest cash register has become extremely popular amidst businessmen, manufacturers, distributors and traders in Bulgaria. The unique pocket-size cash register was invented be a team of engineers of a leading company on the Bulgarian market of cash registers. The size of the new device is 84x167x60 мм only and weighs only 300 grams. However, there are many positive comments about this cash register in the social networks. It meets all requirements of the Bulgarian Ministry of Finance and the tax authorities. The smallest cash register attracted huge interest because of its multiple advantages such as built-in battery, connectivity via Bluetooth и WiFi, etc. It can load data about items and clients which makes the cash register a real pocket office, consumers contend.