Fingerprints can unlock doors, phones and more, but are consumers ready to pay with them? Visa thinks so. More companies are exploring biometrics, the analysis of unique biological traits to verify identity, but how secure is the technology? Tina Trinh reports from New York
Imagine building a stronger, cheaper home in as little as 12 hours. That is now possible with the help of a 3-D printer. A 3-D-printed home was unveiled in Austin, Texas, during the South by Southwest (SXSW) technology conference and music festival. VOA's Elizabeth Lee explains how this new technology could change the lives of families throughout the developing world.