Consumer attaching a file while chatting via webchat client

Is there a feature in webchat which allows a consumer to attach a file and send it to the agent. We have scenarios where the agent would ask the consumer to attach a scanned copy of a receipt. I’m using webchat as the online client for openfire 3.7. Pl let me know if you need any further info.

I’m also interested in this feature. Can anyone advise this?