In Doctor Who, the sonic screwdriver is, perhaps, the Doctor's most iconic tool, capable of diagnostic scans, electronic interfacing, and affecting mechanics and hardware. Different models of the miracle gadget allow each Doctor to bypass any obstacle, excluding wood and deadlock seals. If it weren't based entirely on pseudoscientific resonant abilities, it would be a magic wand, and its various casing designs have housed the same hardware since 1968.
Source：https://www.cbr.com/doctor-who-sonic-screwdriver-explained/
