It is easy to identify visitors without having to go through the complex steps of hand-marking in a restaurant, school, meeting, various companies or organizations, and it is safe, easy, fast and accurate to each other because the store owner also needs to do QR scans without contacting themselves. You do not need to save names or addresses.

-How to use for business purposes
1. Click on "Create QR" in the app.
2. Print it and stick it next to the counter, or the app shows the QR code directly to the customer.
3. Click "Show Visitor List" in the app to view and respond to visitors later.

-How to use customers
1. Press the QR code on the app.
(Telephone authentication is required only once when using the app)
2. Scan QR codes pasted by your business or organization.