Board Thread:General Discussion/@comment-94.8.59.184-20140809221526/@comment-25857155-20151121003524

Scrolls are more high-tech than just cell-phones. When Ironwood placed his scroll on Ozpin's desk, it allowed for a direct data transfer just like hooking in a USB. That was when Ironwood's phone was infected. I would guess it requires direct interface like that for the virus to spread; I doubt such high-tech things are completely undefended in the way of firewalls and the like.