Here’s a really fascinating circuit that implements a combination lock using relays and logic gates. Even with the schematic and written explanation of how it works we’re still left somewhat in the ...

Reactivate now to get the information you were looking for! You will get digital access to reviews and ratings for over 8,500 products and services to help you make better choices for life’s big ...

Padlocks are portable locking devices that we all learned about as kids to secure our school lockers, bikes, and other valuables. They come in an infinite number of configurations and are controlled ...

Finding and installing the right keyless door lock depends on whether you already have smart home security, your Wi-Fi ...

Sometimes I get enough away from writing about other people’s accomplishments long enough to actually do my own hacks. Most recently I developed a combination lock that opens the garage door. The idea ...

We tested highly rated smart locks that feature connectivity, changeable codes, and fingerprint readers. Find out which ones ...

The tall black rectangle looked sleek (if huge) in person with a pocket-style grip and a rather sizable display on the ...

Those combination locks you pick up for a few bucks at the office supply store have never been the epitome of security — but in recent weeks, they’ve taken a beating. A few weeks ago, Samy Kamkar — ...