In many areas of foreign countries, the distribution of personnel shows a relatively scattered state. This unique population distribution 

pattern has given rise to a large number of small supermarkets. However, due to the limited scale and resources of small supermarkets,

 it is difficult to establish and maintain such a system. Therefore, it is necessary to connect mobile phones with Bluetooth price tags.

Through this scheme, shopkeepers and staff directly connect the price tag with their smart phones, without complex networks and 

expensive equipment, and with low cost and technical threshold. The price tag information can be updated at any time according to 

the situation, which provides great convenience for the daily operation of the small supermarket. The management of commodity 

information can reflect the changes of the market more timely and accurately, so as to enhance the competitiveness of the small 

supermarket in the decentralized market environment.

I、Hardware Composition

1、Ink screen: according to the actual application scene and demand to choose the appropriate size, resolution and display color 

(such as black and white or black and white red color) ink screen

2、Bluetooth chip: responsible for Bluetooth communication with the mobile phone, choose low power consumption, stable signal 

and good compatibility of Bluetooth chip

3、Microprocessor: the core control component of the electronic price tag, responsible for processing the data received by Bluetooth, 

controlling the display content of the display screen, and managing the power supply, etc. (some Bluetooth chips can achieve this function).

4、Power management system: battery and power management chip. 

II、How it works:

1、Pair and connect with Bluetooth price tag through special configuration tool mobile app

2、After successful connection, the information of the finished product can be set in the app, such as price, commodity name, etc., 

and the information can be transmitted to the microprocessor of the price tag through Bluetooth.

3、When you need to change the commodity information, open the app again, connect the corresponding price tag, modify the commodity

 information in the app, and the new data is transmitted to the Bluetooth of the price tag through Bluetooth. After receiving the data, it is 

passed to the microprocessor, and the data is processed, and the new information is sent to the display screen for display.

III、Display principle:

According to the data to be displayed, the microprocessor controls the charge distribution of the microcapsule in the ink screen, so that 

the black and white particles of the microcapsule move, so as to form different patterns and words to display commodity information.

IV、Advantages:

l No network infrastructure required  

l Flexible and easy deployment

l Save time and effort, and the cost is relatively low

l Low barriers to use, buy and use

V、Application scenarios

1、Small retail stores

2、Temporary stands, booths