Biodata
Biodata contained information on a person's history and timeline (like temporal DNA). If you could manipulate a person's biodata you could potentially alter their entire time stream. (EDA: Alien Bodies)
On Gallifrey they had stores of all Time Lord biodata in the form of biodata extract. The Master was able to gain access to the Fourth Doctor's biodata extract to summon him to Gallifrey. (DW: The Deadly Assassin)
The Faction Paradox particularly used biodata in their rituals. They usually used a biodata extractor to remove biodata from a subject, though any form of device that could remove blood would work, since it would contain biodata. (EDA: Alien Bodies)
Braxiatel had a Biodata Archive, with the biodata of every Time Lord in every regeneration, so that Gallifrey could be rebuilt should it fall to the Dogma Virus. (BFG: Panacea)
