UnitedHealthcare says it will cover doctors' visits by live video on smartphones, tablets and computers. Doctor On Demand hide caption

itoggle caption Doctor On Demand

President Obama announced an initiative to give e-books to low-income students while visiting the Anacostia Library in Washington on Thursday. Shawn Thew//LANDOV hide caption

itoggle caption Shawn Thew//LANDOV

Our modern relationship to property — namely that it's burdensome to own, and therefore less valuable — has allowed the sharing economy to expand. Gustav Dejert/Ikon Images/Corbis hide caption

itoggle caption Gustav Dejert/Ikon Images/Corbis

Martin Starr plays software designer Gilfoyle in the HBO comedy Silicon Valley. In the show's new season, Gilfoyle and his fellow techies attend a startup competition named "Disrupt." Frank Masi/HBO hide caption

itoggle caption Frank Masi/HBO

SwiftKey analyzed more than a billion pieces of emoji data, organized by language and country. The poop emoji was most popular in Canada. Unicode/Apple hide caption

itoggle caption Unicode/Apple

The author, modeling her mother's watch. Laura Sydell/NPR hide caption

itoggle caption Laura Sydell/NPR

"Today's protests have become a bit like climbing Mt. Everest with the help of 60 Sherpas, and the Internet is our Sherpa." — Zeynep Tufekci James Duncan Davidson/TED hide caption

itoggle caption James Duncan Davidson/TED

As the Apple Watch goes on sale Friday, it's unclear if the gadget and others like it can attain the utility and prominence smartphones have in the past eight years. Ryan Emberley/AP hide caption

itoggle caption Ryan Emberley/AP

Biometrics are increasingly replacing the password for user identification. iStockphoto hide caption

itoggle caption iStockphoto

Work partners Jon Chintanaroad (left) and Mike Prestano are all smiles now, but founding a tech startup together threatened their friendship — and their business. April Dembosky/KQED hide caption

itoggle caption April Dembosky/KQED

The Google logo is seen at the Google headquarters in Brussels. This week, Google is changing the way its influential search engine recommends websites on smartphones and tablets in a shift that's expected to sway where millions of people shop, eat and find information. Virginia Mayo/AP hide caption

itoggle caption Virginia Mayo/AP

Intel Corp. co-founder Gordon Moore holds up a silicon wafer at Intel headquarters in Santa Clara, Calif., in 2005. Moore's prediction 50 years ago, called Moore's Law, has been the basis for the digital revolution. Paul Sakuma/AP hide caption

itoggle caption Paul Sakuma/AP

Twitter changed its direct messaging guidelines Monday. Now, any user can direct-message any other user even if they are not following each other. The new feature is not automatically enabled; users will have to opt in. iStockphoto hide caption

itoggle caption iStockphoto