The new model release for fotolia requires a "Visual Reference" to be attached at the top of the release.
Can anyone help me to understand what that is? Is it like a passport photo , or just any photo of the model?

Link to the new model release is https://www.fotolia.com/Info/Release/View/release_adult

I was unable to find any explanation on fotolia's website.

Thanks guys for your help

Thank you Mantis. So any photo with recognizable face will do I guess. Thank you my frend