Is there a monthly charged fee? カスタマーセンター August 28, 2017 01:36 Updated Follow There is no monthly fee for using NinjaLock2. Related articles Is NinjaLock1 still available for purchase? Which kind of batteries can I use? What new functions does NinjaLock2 have? How can I check the operation history? Which OS does the NinjaLock support? Comments 0 comments Article is closed for comments.