[jmcguckin]

I think part of the reason is that they want to be able to track the images back to you. Some person in the company is probably worried that a user will generate child porn like images and distribute them on the net. When the cops eventually come calling, they want to point to the user. This probably means there is a user-id embedded somewhere in the image.

[cookiemonsieur]

If you put the feature behind a paywall, technically you can track requests using the payment card ?

In that case, what would be the added benefit of using an government issued ID ? really curious.