Temporal shift

A temporal shift is a form of transport that is used to move beings across time. Temporal shifts are normally used in emergency cases because by using one, the traveller's power cells are greatly reduced.

The Cult of Skaro escaped the Battle of Canary Wharf in 2007 through an emergency temporal shift and arrived in New York City in 1930. (DW: Doomsday/Daleks in Manhattan) Likewise, Dalek Caan used an emergency temporal shift to escape from New York after the Doctor foiled the plans of the Cult of Skaro and led the rebellion of the Human-Daleks. With the other three dead, Caan escaped alone. (DW: Evolution of the Daleks)

Caan ended up in the Time War, which was time-locked and, due to the time window necessary to enter being a mere fraction of a second, impossible to reach. Regardless, Caan had succeeded in entering through this window, at the cost of his own sanity. (DW: The Stolen Earth) It seems, therefore, that temporal shifts are strong enough - given the right user - to break through a time lock as strong as the one surrounding the Time War, which even the Time Lords themselves struggled to escape from. (DW: The End of Time)