When the car door lock was introduced, it was the best technology available for the job. The simple lock-and-key system still is standard on many cars. But it comes with a downside: fumbling with keys ...

Many new and used cars now have keyless entry systems. These provide car owners with the added convenience of being able to open their car’s doors and start its engine without needing to take the key ...

Opening hotel-room doors with an electronic swipe card isn’t terribly difficult. But industry officials want to make it even easier for guests to get into their rooms. Starwood Hotels is one of the ...