Why Smart Locks Are the Most Practical Security Upgrade

Forget cameras and sensors for a second. The most useful security upgrade for most households is a smart lock on the front door. Not because it is high-tech, but because it solves real everyday problems: kids who lose keys, guests who need temporary access, and the 11 PM "did I lock the door?" question.

Smart locks come in three main flavors, and the right one depends on who lives in your house and how they actually use the door.

Keypad Locks: The Reliable All-Rounder

Keypad locks let you unlock with a 4 to 8 digit code. Most models let you create multiple codes, so the kids get one code, the dog walker gets a temporary code, and you can delete codes when people move out.

This is the style I recommend to most people. Codes do not run out of battery, they do not need Bluetooth pairing, and a seven-year-old can learn one in five minutes. The Schlage Encode and Yale Assure Lock 2 are both solid options in this category.

  • Best for: families, rentals with rotating guests, households where people forget keys.
  • Drawback: codes can be shoulder-surfed. Use 6+ digits and change them occasionally.
  • Battery life: 6 to 12 months on most models (4x AA batteries).

Fingerprint Locks: Fast but Finicky

Fingerprint smart locks have gotten much better in the last two years. The Eufy Smart Lock Touch and the Ultraloq U-Bolt Pro are both genuinely fast, usually unlocking in under a second.

The catch: fingerprint readers struggle when your fingers are wet, greasy, or very cold. If you live somewhere with real winters and come home wearing gloves, you will end up using the backup code anyway. They also need more frequent battery changes because the fingerprint reader uses more power.

  • Best for: single adults or couples who want the fastest unlock experience.
  • Drawback: wet/cold fingers, more battery drain, enrolling every household member.
  • Battery life: 4 to 8 months depending on usage.

App-Controlled (Bluetooth/WiFi) Locks

Some smart locks rely primarily on your phone for unlocking, either via Bluetooth proximity or WiFi. The August Smart Lock is the most popular example. You walk up to the door with your phone in your pocket and the lock opens automatically.

This works well when it works. The problem is that auto-unlock depends on Bluetooth reliability, which varies by phone model and OS version. And if your phone dies, you are locked out unless the lock has a physical backup. I would not recommend an app-only lock as the primary access method for a family.

  • Best for: tech-comfortable adults who always have their phone charged.
  • Drawback: Bluetooth flakiness, phone battery dependency, guest access requires the app.
  • Battery life: varies widely, 3 to 12 months.

What to Look for in Any Smart Lock

Regardless of the unlock method, check these things before buying. First, confirm it fits your door. Measure the backset (usually 2-3/8" or 2-3/4") and check that the bolt aligns with your strike plate. Second, make sure it has a physical key backup. Third, check that it integrates with your security system if you have one.

Battery life matters more than you think. A lock that dies every two months will make you regret buying it. Look for models rated at 6+ months with realistic usage estimates, not the "up to 1 year" marketing numbers.