Hola Ravi,
See my answers below...
cheers!
Jorge
On 11-04-15 02:14 PM, Ravi Agarwal wrote:
Dear Dr.Jorge,
I talked to my friend Venkatesh here about the project and the final
goal we are trying to achieve. He is visually impaired and uses
assistive technologies for operating computer etc. I got a wonderful
feedback from him. He is excited to use the technology and thinks that
it will be very useful. He also said that if this was implemented
universally, like it can be made compulsory for some buildings to have a
Wifi network and tagged fingerprints stored so that one could easily
navigate room to room.
Great! we are indeed trying out different approaches to making sure
this becomes widely available... I think the best approaches will be
those that offer value to people with blindness and others alike, so
sustainable for-profit models may be developed. Regulatory measures
also help, but ultimately, market approaches have the strongest impact
(me thinks).
He asked me some interesting questions which I
hadn't thought of myself-
1)What happens if two rooms are opposite to each other. Will the
fingerprint be different?
Yes, it should be... we are completing some benchmarking tests to
characterize how this works.
2)The application is good as a location finder but if you want to
navigate in a building then fingerprint will only be different after a
certain range...what will be that range?...
fingerprint patterns change a lot when there are lots of barriers
(like walls, floors/ceilings), thus the range tends to include
full-rooms (whatever their size).
also the map of the building
should already be known by the application. If the rooms are numbered in
an ordered fashion then it could easily be assessed in which way one
should move to reach the destination once you know the proximity but
what is rooms are not ordered.
Yes, mapping has to be done before hand. We'll be working on
developing tools that facilitate this process as part of getting a
building ready for indoor positioning.
One more guy suggested another application of this technology. Suppose
you have a house with multiple rooms. Now if a telephone call comes then
you don't want all the phones to ring...through wifi fingerprinting it
can be sensed that in which room you are and only that phone can be made
to ring.
This is a really cool application... useful to me since I don't want
the phone in the baby's room to ring when he is asleep. We should get
a wiki application ideas page started. Would you mind doing that?
I know that all these will be applications once we are through with the
project it seemed very interesting to me so I thought I will share it
with you.
great, thanks!
-Ravi Agarwal
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