Detect barcode on camera before decode (Unity C#)

[Yiu Sun Leung]

I am currently making an Android app that has a QR barcode reader inside. I successfully implemented the decode part. However, currently it needed a timer to decode every 2 seconds since it was very laggy to decode every frame. Is there any method in the plugin that can detect if there is a barcode on the camera texture first, so the app doesn't need to lag every 2 seconds?