Do smart locks need to have spare keys? Are they safe?

The mechanical key for smart locks serves as an emergency backup, and as such, it requires a specific method of use, which is unquestionable. Generally, installation professionals of smart locks will advise users to keep spare keys in their cars, at their parents' homes, or in a secure and inconspicuous location in the office, rather than at home. This can be considered part of the smart lock's usage instructions. If a situation arises where a user cannot access the electronic system because they have stored the spare key at home, it means the user has not followed the instructions.

From another perspective, spare keys can extend the lifespan of smart locks. Smart locks are essentially a combination of mechanics and electronics, integrating electronic components onto the foundation of a mechanical lock. Therefore, smart locks are electronic products, each with its own warranty and service life. If a smart lock has a two-year warranty, and after three to five years, it is no longer covered by warranty, or after a longer period, it reaches the end of its service life, the value of the spare key becomes significant. If one does not wish to replace the lock, using the spare key allows the lock to continue to be used.