Several years ago, we may be unfamiliar with the term of
Wi-Fi. But in 2015, it seems that Wi-Fi has been considered as one of the basic
needs for most of people. Then the question is will we always depend on Wi-Fi
forever?
Maybe not forever, because there is still a technology
that's claimed more sophisticated than Wi-Fi. Named Li-Fi, this technology was
found by a genius named Harald Haas in 2011. Li-Fi transmits data via light
from a bulb.
So imagine, later bulb in our living room can also function
as a router. Not an ordinary router, but the router with an ability to transfer
data at up to 1 Gbps in daily practice - even on a test it exceeded 224 Gbps.
1 Gbps is very fast if compared to the average speed of
Wi-Fi, about 100 times faster. At this point, an HD movie can be downloaded in
a matter of seconds, and it all comes from a bulb.
Li-Fi is no longer just a concept and prototype. A number of
companies are ready to test their products in the field, not only in the
research and development laboratory. One of them is a startup from India,
Velmenni, which is testing its Li-Fi bulb in offices and industrial areas in
the Estonian capital, Tallinn.
The only drawback of Li-Fi technology is probably the light
can't penetrate the walls. However this is not a big deal because in another
room we certainly also need lighting source, so we just need to put the other
Li-Fi bulb, and then we can enjoy high speed internet access.