People already use their cell phones to read e-mail messages, take pictures and play video games. Before long, they may use them in place of their wallets. By embedding in the cell phone a computer ...

Chances are you’ve seen wireless payment terminals, those handheld devices being used by the clerk at the Apple Store or the flight attendant who pours a cocktail at 35,000 feet. The devices allow for ...

A man looks at a mobile phone as he sits before the Manhattan skyline on June 10, 2021. A new study examined 10 of the leading credit card issuers in the country based on four categories and five ...