The doctor has carried many sonic screwdrivers of various designs throughout his lifetimes ranging from a simple silver coloured tube to more complex illuminated and articulated versions this multipurpose tool features numerous settings and can open most locks detect all manner of deadly rays read bio signs and generate sonic waves of great power this second sonic was lsquogifted39 to the twelfth doctor by the tardis itself after his previous version was lost to him being gallifreyan