Song Gwan-jong Stock Traffic Light, a stock investment app developed by Korea Economic Daily, launchedOrganize traffic in the chaotic stock market with the traffic light app! ★Introduction to the core functions of stock traffic lights1. Chart traffic lights- Provides optimal trading timing through a 30-minute buy signal and a 3-minute sell signal. 2. Stock traffic light- Stocks are extracted using three best algorithms carefully selected by partner Song Gwan-jong.You can choose one that suits your personality, such as an office worker, businessman, or full-time investor. 3. Trading traffic light- You can display upper/lower bands, stop-loss lines, and profit-loss lines on the chart for reference when buying or selling.※ Users can grant the following permissions to smoothly use this service. Depending on its properties, each permission is divided into mandatory permissions that must be granted and optional permissions that can be optionally granted.1. Required permissions-Storage space: You can use the function to upload/download files to the device during the use process.- Address Book: Required to verify your Google account and use the push notification function.- Phone: Required to check device information and use the ARS payment function.2. Permission to allow selection- Microphone: You can use the stock voice search function.※ You can use the service even if you do not agree to the optional access rights.