Almost everyone has experienced fumbling for keys in the dark, misplacing a set right before leaving the house, or worrying about who might have a copy. Traditional keys come with real drawbacks. They ...

My sister got locked out of her house for the third time in six months last spring. She called from her porch, frustrated and embarrassed, waiting for a locksmith to charge $200 for ten minutes of ...

Worrying about where you left your keys when stepping out, fretting over whether they’ve gone missing, or wondering if you handed them over to the kids—these anxieties are a daily occurrence in almost ...