allow user to make own marker

Hello there, 

I have idea to make application what allows users to make they own marker instead of using predefined marker, my question is: Is it possible to use vuforia for that? And if it is any suggestions please... here its one example app to be more clear what its idea...

https://play.google.com/store/apps/details?id=com.delta.sport.florabest&hl=en

thanks!!