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Sunday 9 April 2017



In this world of smart gadgets, you can get a message on your cellphone, your laptop, your tablet, or even your watch. Instead of hopping on a call or seeking out a news story, everything conveniently comes to you. But, what about consumers who are visually impaired? A South Korean company called Dot has reinvented tactile communication with the world's very first Braille smart watch.
Like other wearable devices, their new smart watch includes typical functions like showing time (down to the seconds), getting directions, and displaying social media and text message notifications. But here's the really cool part: it uses a refreshable Braille display—hence the name, Dot Watch.
 To tell time, you simply feel the dots on the display. If there's one dot followed by two dots, then it's 12 o'clock. Easy peasy. How do you read messages? According to Big Think, the display is made of "24 touch sensors and utilizes electro-dynamic cells to relay information." Magnets and a grid of pins create four Braille characters at a time. When your Dot Watch senses that you've finished reading a text (i.e. when your finger reaches the end of a Braille line), the screen instantly refreshes. As TIME notes, the watch can use apps on any device via Bluetooth.
Dot Inc. has received 140,000 pre-orders from 13 different countries, and Big Think estimates that English and Korean versions (priced at around $200 USD) will start shipping out April 2017. In addition to their Dot Watch, Dot Inc. hopes to improve Braille literacy in developing countries by introducing a low cost version of the device called Dot Mini. The company hopes to be a lifeline for the 285 million visually impaired people who want to access information at their fingertips—just like everyone else.



One day in January 2016, the U.S. Air Force decommissioned a single satellite and accidentally uploaded an incorrect time to the clocks aboard 15 others in the process. The time difference was tiny -- only 13 millionths of a second -- but the results were significant. Police, fire, and EMS radio equipment in some parts of North America stopped functioning for more than 12 hours, and BBC digital radio went out for two days in several areas. Luckily, short-term backup systems helped ensure that the general public wasn't affected by many of the problems, but the scare posed an important question: what do we do if GPS fails completely? We might be able to go back to paper maps, but navigation is a very small part of what makes the system important. What's most essential about GPS is time: each satellite contains multiple atomic clocks that are synchronized to nanosecond precision and continually broadcast signals to Earth. For navigation, GPS units use the tiny differences in the arrival time of each of these signals to know exactly where they are in the world. But some things, like cell towers, power grids, and ATMs, rely on the time alone to stay synchronized. This means that a GPS failure could disrupt an untold number of systems essential to daily life -- and there's no backup plan.



Wi-Fi has revolutionized the experience of connecting online, but it has already been one-upped. The radiowave technology may be soon replaced with Li-Fi, the wireless internet alternative that is 100 times faster than the Wi-Fi we use today. The secret behind Li-Fi, which was invented in 2011 by Harald Haas from the University of Edinburgh, Scotland, is that it uses light rather than radiowaves to transfer internet data, and the frequency of light has a range that is 10,000-times greater than radiowaves. Li-Fi has the power to download a full-length HD movie in just a few seconds.

IBM Watson is more than just a computer -- it's a supercomputer. More specifically, Watson is a supercomputer designed to process information more like a human than a computer. Watson was named after IBM's first CEO and industrialist, Thomas J. Watson. Originally, the supercomputer was developed to compete on "Jeopardy!" against human opponents. It did just that in 2001, edging out former winners Ken Jennings and Brad Rutter to win the $1 million prize. The supercomputer holds so much information that it can pull from white papers and studies to form pro and con arguments on millions of different topics.
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