Work support system and method with screen sharing and development system for multi-platform application

A work support system with screen sharing, comprising:

• a customer terminal in which a service application is installed and executed;
• an employee terminal configured of sharing and displaying a designated area of an execution screen of the service application;
• and
• a work support server configured of communicating with the customer terminal and the employee terminal, and supporting a customer work by setting a screen of the customer terminal to be shared in the employee terminal under a specified condition,
• wherein the work support server generates a token in response to a token generation request for work sharing from a first terminal, which is one of the customer terminal and the employee terminal, transmits the token to the first terminal, compares a token included in a sharing request from a second terminal, which is remaining one of the customer terminal and the employee terminal, with the token that is transmitted to the first terminal, and allows a screen sharing if the two tokens are identical,
• wherein the first terminal generates an identification code including the token and an access information to the work support server and outputs the identification code on screen,
• wherein the second terminal captures the identification code, and generates the sharing request including the identification code and information of an employee who operates the employee terminal.