project uses datacasting and User Datagram Protocol through both small satellites, such as CubeSats, and larger, more conventional geostationary communications satellites in a satellite constellation network. Wi-Fi enabled devices would communicate with the satellite hotspots, which receive data broadcasts from satellites. Advantages over Internet transmission Datacasting has certain advantages over using the Internet, specifically concerning privacy and censorship resistance, which can be considered important in an era of mass surveillance. Both satellite and terrestrial broadcast multiplexes can carry multicast IP data. This can be forwarded onto a LAN with a suitable receiver, such as a low-cost set-top-box running custom firmware. The software to transmit web pages over multicast is fairly easy to implement; some of the technology has been already developed. Content received can be stored automatically on the set top box's built in hard drive, served to users over Wi-Fi or Ethernet. A fractional broadcast multiplex can transmit up to hundreds of gigabytes of content each day. Privacy Because the data stream is receive only, nobody can tell what a user is receiving. Thus the government cannot round up citizens for reading forbidden material in oppressive regimes. In extreme cases the receiver can be physically disconnected from the Internet to ensure maximum security, thus providing a system much more secure than Internet based anonymity networks such as Tor. This could ultimately put a complete stop to law enforcement attempts to censor material on the darknet and making many censorship laws virtually impossible to enforce; thus restoring some of the 'anarchic freedom' of the early days of the Internet. Censorship It is much more difficult, on a technical and political level to jam a satellite signal compared to blocking a website. Data streams can be transmitted alongside television channels. An attempt to jam the data stream will end up jamming the TV stations as well. Efficiency Despite the very high cost of satellite bandwidth, broadcasting to hundreds of thousands or millions of receivers may well be cheaper than using the Internet. No build-out and maintenance of costly physical infrastructure (e.g. fiber optic cables) is required for the end-user, only a satellite dish or TV antenna is necessary, allowing services such as educational materials to be delivered to underserved communities. See also Interactive television DVB-H Multimedia home platform UDcast MPEG Multiprotocol encapsulation MPEG Unidirectional Lightweight Encapsulation References Broadcasting Broadcast engineering Radio technology Interactive television