Smart locks offer several ways to open the door. The best choice is usually a combination, because each method covers the weaknesses of another.
Fingerprint
The fastest and most convenient. Nothing to carry, and it cannot be lent by accident. Sensors can struggle with very dry, wet or worn fingertips, so register more than one finger for each person.
PIN code
Easy to give to guests, cleaners or contractors, and you can change it afterwards. Choose a lock with an anti-peep feature that lets you add random digits around the real code.
RFID card or tag
Good for children and household staff who may not want to use a phone. Keep a spare card and remove a lost card from the lock straight away.
Phone app
The app lets you open the door remotely, create temporary codes and review who entered. It depends on a good Bluetooth or Wi-Fi connection, so do not make it your only method.
The best setup
Use fingerprint for the family, a PIN or card for visitors, and keep the mechanical key as backup. This covers speed, sharing and power failure together.
Frequently asked questions
Which unlock method is the most secure?
Fingerprint and a private PIN are both strong. A combination, such as fingerprint plus a mechanical key backup, gives the best overall protection.
Can I give a visitor temporary access?
Yes. Most locks allow a temporary or time-limited PIN, and app-enabled locks can send one remotely.
Do I need Wi-Fi for a smart lock to work?
No. Fingerprint, PIN and card all work without internet. Wi-Fi or Bluetooth is only needed for app features.
About the author
About the author
Farida Behrainwala
Content Writer, Co-Founder of Safarmarq
Farida Behrainwala is a specialised content writer and co-founder of Safarmarq, the revenue-led marketing agency behind the Golden Sword Hardware website. She turns product details and technical specifications into clear, practical guides that help buyers choose with confidence, from smart locks and power tools to safety gear and camping equipment. Alongside writing, she leads product management and social, graphic and video content, so every guide on this blog is written to be found on search, easy to follow and useful on the day you shop.
