Wi-Fi

Wi-Fi was a method of wirelessly connecting devices.

In 2009, the transformation of humanity into the Master Race was blamed on hallucinations from faulty Wi-Fi. (DW: The End of Time)

In the 21st century a Fliis used Wi-Fi to telepathically control people. (DWAM: Fashion Victims)

In the 50th-51st century, the Library had Wi-Fi. When Evangelista was killed, her data ghost was caught in the Wi-Fi and reconstructed by CAL in her hard drive. (DW: Silence in the Library/Forest of the Dead)

In the 52nd century, the Seventh Transept had decent Wi-Fi, despite being a tomb. Dorium Maldovar was able to use his entertainment chip after he was decapitated and brought to the Seventh Transept. (DW: The Wedding of River Song)