An alternative could be using text messages in additional.
At our University a student is just finishing his Master thesis. He
developed a framework for the collection of point based data based on
Internet AND cellular network (based on ideas provided by Harry
Ferdiansyah from Indonesia). In the latter case SMS text messages are
used for the transfer of information. The information chunks which can
be submitted are based on a configurable thesaurus to assure consistency
and further automatic processing.
The data transfered using Internet or cellular network are stored in a
server-based MYSQL dbms.
Regards Franz-Josef
Am 03.02.2016 um 15:02 schrieb Mhairi O'Hara:
Cheers John! We're collecting data on financial services, education
and health facilities in Eastern Uganda and are looking for sharing
solutions that don't involve the internet. With up to 50 students at
times, sharing files via usb sticks and external hard drives is not
ideal as it can be time consuming. Will look into the setup to see if
it could work for us here.
Mhairi
On Wed, Feb 3, 2016 at 3:00 PM, Katja Ulbert <[email protected]
<mailto:[email protected]>> wrote:
Thanks for this valuable information, John!
On 31/01/16 22:34, Pete Masters wrote:
Really interesting, John.... Thanks for the post. Just conducted
training in DRC on data collection and base mapping. We tried to
focus as much as possible on offline solutions. Wish I'd read
this before we'd been, not just after! ;)
Pete
On 31 Jan 2016 20:35, "john whelan" <[email protected]
<mailto:[email protected]>> wrote:
I've been playing around with Serval software on Android.
Ideally it needs a wifi mesh set up using multiple firmware
modified TP-Link MR3020 portable routers with custom software
connected to a small radio device which turns it into a mesh
extender.
The original concept was to turn the smartphone into a router
but the latest Android software well anything above 2.2
denies access to do this. Besides which rooting the phone in
this manner is not good from the security point of view.
However if you are running Windows 10 and your Laptop
supports it, most should, you can turn your laptop into a
wifi hot spot that other devices can connect to. Note you
should not need to be connected to the Internet for this to work.
Translation Android smartphones running Serval within say 100
meters of the laptop can now talk to each other. I haven't
tried a phone call, I don't have two Smartphones to hand, but
messaging certainly works.
You should also be able to transfer files certainly from one
smartphone to another and if Serval doesn't support file
transfer to the host laptop there are other apps around that
do. So things like the latest maps for Osmand etc can be
brought down once to the laptop then propagated out to
smartphones or a smartphone sent by mail, mule etc to the
wifi hub can then connect and distribute files etc.
I haven't looked at the implications of interconnecting
laptops perhaps with cat 5 cables and although phone calls
should be fine across one wifi hub theoretically each hub
used in the hops adds a small delay so voice quality over
multiple hops may not be ideal.
Cheerio John
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