Function access control

The function access controls were a part of the Fourteenth Doctor's sonic screwdriver located at the pommel. At the very end, there was a hexagonal slot. (PROSE: ) 
== Behind the scenes ==
* As revealed by props makers Michael van Kesteren and Barry Jones,DWM 594 - Designated 'Driver, Page 18 the hexagonal indentation in the pommel was designed to fit an ordinary screwdriver head.
== Footnotes ==
Category:Sonic screwdriver technology