Want to keep a spare set of keys in your wallet without them bulking it up? Grab an old credit card and a cutter, and you'll soon have a DIY key holder that keeps them together and doesn't bunch them ...

When I leave my home, I check that I have three things: keys, wallet, phone. How long will it be until the first two are obsolete? My wallet has only three things I actually need: credit cards, cash, ...

Google Wallet gained the ability to unlock hotel room doors at participating locations last year. With digital hotel room keys, you can use your phone to access hotel rooms and amenities, saving you ...