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Self-printed guns aren't the only firearms altering the weapons landscape. Also out there: Precision rifles with high-tech scopes and auto-firing triggers, and iPhone adapters and apps that offer custom crosshairs.
From an emergency tablet to a handset with built-in solar charging, Kyocera shows off some of its concept devices at MWC 2015.
The next evolution in wireless networking holds promises of self-driving cars and movies that download in the blink of an eye. 5G is big at this year's Mobile World Congress, but don't expect it until 2020.
Traditional carriers hope to profit from the push to connect all manner of electronic devices to the Net, but a French startup just took a little wind from their sails.
Using gyroscopes, accelerometers and magnetometers, the Neoh headphones on Kickstarter know where your head is and adjust the sound accordingly.
This magnetic speakerphone for your fridge includes an e-ink messaging display, radio, and a hefty one month battery life.
A team at the University of Bristol has used ultrasound to create three-dimensional shapes in mid-air that can be touched and seen.
Sennheiser's Momentum brand of high-quality headphones gathers speed with the first in-ear headphones to bear the name.
Sennheiser has redesigned its in-ear headphones with the CX range, including red cables that might look familiar...
The next time a sharknado comes your way, you could be grateful to have one of these devices -- now seeking funding on Kickstarter -- around your ankle.