Hide Image in Post from Guests?

[statusjpn]

Can't seem to for the life of me find this option. Is this available in the latest 4.5.4?

I reckon hiding the images/pictures that are attached inline the post will encourage more user sign ups.

Thanks in advance!

P.S. The checkbox for guests to "Download Attachments" is unchecked but the guest is still able to view images within posts.

[Morrigan]

You would need a mod/plugin for that.