Biodata extract
A biodata extract could be used to give a biodata projection. Once seen, that future became a fixed point in that individual's personal timeline. (AUDIO: The Vardan Invasion of Mirth)
On Gallifrey, every Time Lord had a biodata extract stored in the Matrix, allowing the authorities to keep a record of the population. Though it was thought to be impossible to remove a biodata extract, the Master managed to remove his. (TV: The Deadly Assassin [+]Loading...["The Deadly Assassin (TV story)"]) Even after the Last Great Time War, there was no official biodata extract on the Master, even though their existence was well-known to the Time Lords by that point. (PROSE: A Brief History of Time Lords [+]Loading...["A Brief History of Time Lords (novel)"])
