Is there any way I can install the NinjaLock onto my door other than the double-sided tape? カスタマーセンター October 25, 2017 08:16 Updated Follow We also provide an additional magnet part. *It can not be used on wooden doors. Related articles Do you offer installation services? Where do I insert the batteries? The NinjaLock lights up red but is it broken? Can I operate the NinjaLock from devices other than a smartphone or tablet? Where can I download the application? Comments 0 comments Please sign in to leave a comment.