VoIP has paved the way for other means of leveraging the internet to send digital files over IP telephony transmissions. Virtual fax is one of those. While VoIP itself is not used to send fax over the internet, the concepts are pretty similar. The main difference is that the transmission is one way and the payload is a soft or hard copy of documents. The same goes for other modern systems that use IP transmissions like home security systems. Similar to virtual fax and VoIP, home security cameras use IP transmission to remotely transmit footage to cellphones and other streaming devices. The possibilities are virtually endless.