Visa, Samsung team up on mobile payments The electronic payments network's PayWave application will be a standard feature on Samsung devices equipped with near-field-communication technology, which allows customers to pay for goods or services by tapping their phones on a reader, the companies said Monday at the Mobile World Congress in Barcelona, Spain. Phone companies and financial institutions such as Visa, based in Foster City, and MasterCard are promoting NFC applications for use in so-called mobile wallets by encouraging the more than 70,000 people attending the industry congress this week to pay for coffee and badge into events with handsets carrying the feature. According to the Palo Alto company, the Slate tablet has embedded sound-enhancing technology licensed from Beats Electronics and its own ePrint wireless printing software. pharmaceuticalsBayer-Onyx drug's expanded use OKdGerman drugmaker Bayer and South San Francisco's Onyx Pharmaceuticals have won expanded U.S. regulatory approval for a cancer drug to treat patients with a rare type of stomach tumor. electric carsTesla CEO says story hurt valueTesla Motors chief executive officer said a New York Times story saying the electric-vehicle maker's Model S sedan fell short of its estimated range trimmed the company's stock-market value as much as $100 million.