Time distortion

Time Distortion was a disturbance in space-time which may have been the result of anachronisms.

Cyber-Technology could detect the Doctor's TARDIS by registering the time distortion it created. (DW: Attack of the Cybermen) It is possible that all time vessels generated distortion, as the Sixth Doctor was able to track the Rani based on this factor. (DW: The Mark of the Rani) The Third Doctor also thought of her as an expert in time distortion. (DW: Dimensions in Time)

Time distortion was present in the Humanian Era, the Sensorian Era, and the Sumaran Era. (BFA: Neverland)