A six-year-old fire alarm system installed by one of my readers was recently inspected by the local fire department. The building owner was told that the request-to-exit buttons on six exit doors ...

Push-button start is standard on most modern cars, trucks and SUVs today. How does it work and is it better than ignition keys?

After World War II, Americans were promised that pretty soon everything would be operated by push-button. Push-button cars, push-button schools — and a push-button ...

Our safety relies on them. We tap without second thought. Yet to the average pedestrian crossing the street, exactly how push-to-walk buttons work remains a mystery. Do they send a signal to the ...