Explain the significance of its emergence from the perspectives of users, couriers, property management, and courier companies.

People's food, clothing, housing and transportation are closely related to the Internet. Online shopping makes people's life more convenient. People have been accustomed to online shopping and delivery. According to statistics, in 2016, the total volume of express delivery services in China reached 31.28 billion pieces, and it is expected that by 2020, the volume of express delivery services will reach 70 billion pieces. However, as the end link of express delivery, delivery is simply a huge challenge.

For users:

(1) Safe and reliable, intelligent express storage;

(2) 24-hour self-service, pick-up at any time, increasing life efficiency;

(3) Simple and user-friendly self-service experience;

(4) Effectively protecting residents' privacy and improving their quality of life.

For couriers:

(1) No need to wait, reduce unnecessary communication costs

(2) Short delivery time, averaging one item per minute

(3) Eliminate the trouble of climbing stairs, don't lose anything if you don't go upstairs

(4) Centralized delivery to reduce secondary delivery

For property management in residential areas:

(1) Save space, reliable, quiet, clean and tidy

(2) Avoiding lost items and reducing disputes among property owners

(3) Reduce accumulation and improve service quality

(4) Improve the intelligence level of the community

For courier companies:

(1) Centralized delivery significantly improves the efficiency of express delivery

(2) Improve the problems of warehouse explosion, rising labor costs, and difficulty in recruiting couriers

(3) Improve profitability level

A system is designed to consist of four functional subsystems, namely: server, express cabinet terminal, WEB PC client, and APP client.

(1) Backend database server

The backend service program mainly communicates with numerous express cabinet systems in various regions, monitors the online status of each express cabinet terminal in real time, pushes instructions and information to the express cabinet terminal, processes requests and reports from the terminal, etc

(2) Express cabinet terminal

Used to implement various express delivery business processes, the users mainly include couriers and users. Cabinets are divided into different types and sizes of cabinet doors for storing parcels of different volumes.

主要功能：1.)快递员收件寄存 2.)配送到达 3.)快递员取件 4.)会员寄件 5.)客户取件等

(3) Management backend

Mainly manages membership information such as membership cards, terminal information management for express delivery lockers, and log queries.

(4) Mobile client

Users can download the APP client by scanning the QR code to achieve functions such as receiving and sending items. It has SMS interface, payment interface, etc.