Can I attach the NinjaLock onto sliding doors? カスタマーセンター October 25, 2017 08:28 Updated Follow It can be attached onto sliding doors as long as it doesn’t interfere with the door pocket. Related articles Which kinds of doors can the NinjaLock be attached to? Can I attach the NinjaLock onto doors where the thumb turn is combined with the door knob? The NinjaLock lights up orange but is It broken? Comments 0 comments Please sign in to leave a comment.