To illustrate what a Smart QR Code is I will use Binance.com

Binance uses a dynamic QR code that directs users to the appropriate app store based on their device. Here’s how it works:

1. Dynamic QR Code: Instead of embedding a static link, Binance's QR code points to a smart redirection URL (e.g., https://www.binance.com/download).
2. When a user scans the QR code, the backend system checks their user-agent (the identifier sent by their device/browser) to determine whether they are using iOS or Android.

3. Redirection:
   • iOS users are sent to the Apple App Store.
   • Android users are sent to Google Play.
4. To Create a Similar QR Code:
   • Use services like Bit.ly, Firebase Dynamic Links, SmartURLs, or QR code generators that support dynamic redirection.
   • If you want full control, you can set up a simple PHP or JavaScript-based redirect page that detects the device and forwards accordingly.