[HOT] Smartphones using wifi in the field If you ain't in the field or techie ignore this post.
mail at katja-ulbert.de
Wed Feb 3 12:00:20 UTC 2016
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! ;)
> On 31 Jan 2016 20:35, "john whelan" <jwhelan0112 at gmail.com
> <mailto:jwhelan0112 at gmail.com>> 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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