# The large screen displays the QR code for voting. Customers scan the QR code on site and select 2 options. The proportion is displayed in real time on the large screen.
## QR code
Generate a QR code for display on your front-end voting page/mini program
## User votes
[Get question details (list all options)](https://www.yuque.com/apifm/nu0f75/gex3v8)
[Submit voting [single question]](https://www.yuque.com/apifm/nu0f75/yg2kn8)
## Real-time display ratio
Customize the polling details interface of the rotation training background to display according to the number of votes received for each option:
[https://common.apifm.com/doc.html#/%E5%90%8E%E5%8F%B0%E6%8E%A5%E5%8F%A3/%E6%8A%95%E7%A5%A8%E6%A8%A1%E5%9D%97/info_5] (https://common.apifm.com/doc.html#/%E5%90%8E%E5%8F%B0%E6%8E%A5%E5%8F%A3/%E6%8A%95%E7%A5%A8%E6%A8%A1%E5%9D%97/info_5)