Wi-Fi
Wi-Fi was a method of wirelessly connecting devices to each other or entertainment. It could be used as a method of dispersing energy. It had varying qualities of reception.
When about to be incarcerated in the Tower of London with two of his other incarnations in 1562, the Eleventh Doctor jokingly asked if there would be Wi-Fi. (TV: The Day of the Doctor)
In 2009, the transformation of humanity into the Master Race was blamed on hallucinations from faulty Wi-Fi. (TV: The End of Time)
In 2013, the Great Intelligence used an organisation run by Miss Kizlet to upload peoples' souls through Wi-Fi into the data cloud in order to feed its form; this was performed by disguised robots called Spoonheads. (TV: The Bells of Saint John)
In the 21st century, a Fliis used Wi-Fi to telepathically control people. (COMIC: 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. (TV: 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 media chip after he was decapitated and brought to the Seventh Transept. (TV: The Wedding of River Song)
The Eleventh Doctor used a bio-damping feedback transducer to disperse the energy of an exploding Foldback Quasar Engine into the wi-fi at the Royal Albert Halls. (TV: Doctor Who at the Proms (2010))
In the underwater base the Drum in 2119, the Twelfth Doctor used his sonic sunglasses to tune onto the base Wi-Fi, to let the base crew get a look at the ghosts haunting them, to find out what they want, after trapping them. (TV: Under the Lake)
