Popsugar Tech Technology & Gadgets This Smart Lock Unlocks Your Door With Just Your Fingerprint This Smart Lock Unlocks Your Door With Just Your Fingerprint, and We Already Feel Like a Spy 19 September 2019 by Nicholas Rice View On One Page Photo 4 of 4 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 4 U-Bolt Smart Lock - Physical Key Unlock And last but not least is the old fashioned way to unlock your U-Bolt Smart Lock ($170, originally $240) — with a physical key. Simply pull down the black plate and insert your key if all else fails. U-Bolt Smart Lock $170 from amazon.com Buy Now Previous Next Start Slideshow Technology & Gadgets