I had a bio-lock gun safe. It was very inconsistent when trying to open. At times, I barely needed to touch my finger to the scanner. Other times, I would have to repeatedly touch the scanner before it would open. I scrapped it for an old fashioned (electronic) pin key lock. I can open that safe in less than 3 seconds. Again, I am hopeful the technology will improve to a point where smart guns are a viable alternative, but as of now, and comparing it to the Bio-lock safe I once had, it's just not there yet.