Can someone familiar with BenjiLock add their own fingerprint to my lock? Denise March 07, 2020 03:17 Follow Not without the key. The key is required to add or delete a fingerprint. Related articles Full "BenjiLock Instructions" Is BenjiLock bump proof? Can the BenjiLock be used outdoors? How many keys does the BenjiLock come with? Can my BenjiLock be picked?