Researched — not tested

We don’t own this lock. Everything below is patent text, published standards, manufacturer specification, locksmith tooling and publicly recorded security research — tagged so you can see which is which. Where an earlier version of this page said something the evidence doesn’t support, it has been corrected, and every change is logged at the end.

The verdict
4.8/10

Genuinely clever engineering that solved the wrong problem and created a worse one. SmartKey defeats key bumping outright — structurally, not by marketing — shrugs off the rakes that open budget pin-tumbler deadbolts, and re-keys in fifteen seconds without a locksmith. Those are real, and most reviews including our previous one get them backwards.

But it opens under a screwdriver and a wrench at a third of its rated torque, a purpose-built decoder sold to the trade reads its cuts on any generation, and its usable key space collapses to a few hundred combinations. It beats the attacks homeowners have heard of and loses to the ones that are a catalogue purchase.

Covert entry resistance5
Forced bypass resistance2
Key control2
Bolt & hardware7
Value for money6
How to read this review
Nothing here is hands-on. Scores are relative to the whole deadbolt category, not to whether the lock achieves its own stated aim — and the two lowest scores here are for attacks that are published, filmed and repeatable.
TestedPhysically in hand. Nothing on this page carries this tag.
DocumentedPatent, published standard, or a recorded and reported attack.
ManufacturerKwikset's own claim. A claim, not a fact.
CommunityLocksmith and locksport consensus. Informed opinion.
CorrectedSomething we previously published that the evidence doesn't support.