I was reading some interesting stuff about IMSI catchers and their ability to deactivate the encryption on your GSM phone to listen in on your conversations.
Now, considering that these tools are expensive and probably not in the hands of nosy individuals, I'm still curious about this whole deal of a third party device disabling your encryption and conversations being 'out in the open'.
Are there any software tools that display the encryption status of your calls?
Lots of info about IMSI Catchers but most of them are in German... apparently there's more of a fuss about invasion of privacy issues over there.
if you are concerned with your security, then look at www.cryptophone.de . Currently 2 russian companies are writing their own programs like that.
Getting encryption status is not docummented, I don;t think that there exists such a program.
HOwever, according to the Wikipedia page on IMSI-catchers, there are some mobile phones that display an icon when the call is unencrypted. I believe this should be a feature integrated into WM 6.1! Since it is such an old and arguably advanced platform... Maybe someone could write a program that puts an icon in the dialer when the call is unencrypted...perhaps it could also play a warning tone at the start of the call.
as i heard the mechanism of ppcs cant accept any answering machin ...
is that right ? why ?
Probably due to some government regulations of sort, or some intervention of the carriers. The same reason I guess why you cant get a vocoder for the ppc.
As fun as it would be to speak in a robot voice to your m8's I'm not sure if we can, due to the same limitations.
Saying that, anyone found a vocoder for ppc ?
Actually this this is not true for all phone edition PPCs.
Gigabyte g-smart comes with a built in answering machine and 'background sound - alibi' software, and I think there are others too, but HTC models so far have hardware separation between phone and PPC voice systems.
Even despite that there is at least one company (I can't remember their name or site, but they were mentioned here so pleas search) that successfully made a commercial answering machine software that reportedly works well on most devices.
I seriously doubt there is a government regulation on the subject as I read that recording conversations you are part of is allowed in Europe and most of the U.S. (without informing the other party), but the cell companies stand to loose a lot of money from their voice mail services.
That is the same reason some cell co. don't offer models with WiFi - so customers will have to pay for GPRS / 3G.
Anyone interested
http://www.symantec.com/home_homeoffice/beta/overview.jsp?pvid=nssp1beta
Thanks, I needed a laugh.
I am particularly curios as to how they identify SMS as SPAM (with no subject or formatting to rely on)...
I'd say a few words on the antivirus part too but I don't want to give them any ideas ;-)
Oh almost forgot - it would be a super neat trick to hack in to smartphone via the internet (given utter lack of server components in the OS)!
i never heard about anybody who irl had a virus on their pda
much less of anybody who had a firewall
and yet plenty of people are willing to have both firewalls and virusscanners on their pda's
hope they overclock to make their pdas allmost as fast as if they dident
I read some news article (didn't save the link) about a very "good" spyware app for blackberry.
Not only could it monitor all mail and SMS on the device as well as phone calls but it could also turn on the microphone on without a call to turn the device in to a "bug" (as in surveillance device not the stuff MS software is full of).
One thing I couldn't figure out is how did this super dangerous program (which needed to be installed by user despite being referred to as a "Trojan") transfered all that data back to the source without the user noticing and without interfering with device operation.
How much upstream bandwidth does BB have?
Can it do data and voice at the same time (can it do voice at all?).
Any way I am sure that one of these days we will see a real virus for WM platform (a proof of concept file infection has been developed - that does not work with signed files of course).
But until than - if you have nothing better to do with your phone might as well keep the battery draining with a good antivirus / firewall.
Hi,
I am a MSc Student, I have decided to implement a Mobile tracking system using GSM, not using GPS as a proof of concept. Since I am new to this subject, can some one point me to a right start point.
thanx
Ganesh
I think this has been done before:
http://www.navizon.com/
Thanx for the reply,
I forgot to tell one other othing. My project, not only find the location of the callee. If I receive a call from a person I should know where is he calling from. I know that I cannot pin point without a GPS, atleast if I can get a redias from the nearest cell tower.
If I can get a database of all the Cell ID and their GEO location, can I do something with that ?
ganesh
I think the operator will only tell your handset the caller's caller ID in the form of phone number instead of cell ID. It's kind of intrusion of privacy if an operator does that.
Frankly, if the operator really does that - you won't need to research it right now - someone must have exploited it long time ago
See also the POLS project on SourceForge:
http://pols.sourceforge.net/software
even if some sendt that info i doubt all do
as it's not an official part of the std.
Is'nt this illegal???
Thanx for everyone replied,
I got soem sort of a info.
ganesh
the only thing which could be illegal is that the cellphone operators send
that info to the call reciever which is why i say that for those very legal reasons i doubt all operators send it and it's not a native part of the gsm std
Hello,
I am new to the forum and also the owner of an HTC Fuze. I have been playing around recently with the GPS on the phone and got me thinking. I live in NY and we have a CORS network of gps base stations that are fed by the use of ntrip.
I was wondering if their was any way to use the gps signal on my phone and the connection to this CORS network to give me sub inch accuracy on my phone...then not sure what I would do with it then. But I do live on a farm and I would like to see some type of precision agricultural use.
I guess I need a way to have the GPS on the phone talk with the GNSS internet radio and then give me spot on guidance and such.
Please let me know your thoughts or if I need to explain better.
Thanks,
Clayton
bump
bump. Any ideas? Anyone
Great idea cwrisrey !
That will save the cost of a geodetic device, which is many times the cost of a Fuze. Further, it will lead the accuracy of the buildin GPS into millimum class.
Not dig into this further, would you go further to tell these:
Is that CORS data encrypted?
Is that accessible through public internet or VPN?
Is there copy right or intellectuall property right issue involved? (I don't think so, but better make it clear first)
Once again, great idea. Please do remember to update this thread once you got any progress. Thanks.
More info
Hello wg5566,
This site would probably answer alot of your questions clearer than I could:
http://www6.nysdot.gov/spiderweb/frmIndex.aspx
* Is that CORS data encrypted?
-I don't believe so, I think that it is just a form of compression, to distribute across the internet.
* Is that accessible through public internet or VPN?
Yes, the NYS CORS anyway. It accessible from the public internet (although they require you to register with them) But I believe there are other free streams. I also believe it was modeled after being able to be sent threw GPRS.
* Is there copy right or intellectuall property right issue involved? (I don't think so, but better make it clear first)
-I believe the ntrip is based on a GNU, I think the source code is available. http://igs.bkg.bund.de/index_ntrip_down.htm
Windows CE version:
http://www.ilmb.gov.bc.ca/crgb/gsr/downloads/installGNSS.CAB
Please, let me know your thoughts...
Thanks,
Clayton
My fast thoughts:
First make sure there is no satisfied freeware currently available for WM.
If so please ask a moderator to move this to the development & hackings section. And Add tyis sentence on the title: Call for developers for revolutionary GPS app!
I'm sure somebody here can develop this. You know the geodetic device was invented many years ago with very weak profiles comparing to current WM devices. The hardware on our phone should be capable to deal with these calculations, and the WM Pro platform should be capable to support such an app. Anyway it should not be a biggy for many masters here. But it is a biggy for gps users with high accuracy demand for any reason.
Edit: Did you try install that wince cab on your phone? I think some of WINCE apps can just run on WM. Please backup your data first.
Edit2: I tried to install it on my device, at first it did not show up in start menu, then I found the cab just put files and shortcut in the folder names in French. But there is no registry involved in the cab. Only three files. And then program UI itself is in English. Just run the executable from the folder will go right out of the box. So please try it. I did not try to connect & loggin yet, due to not registered account.
Edit3: Looks like the cab is only access the data from internet, convert the data format and export the data, but we still need a geodetic/gps software to process/use the data.
Disclaimer: I attatched these three files for the only purppose of exchanging software developement infomation. Anybody if download it please do not use it for any purppose other than this. Thanx.
Some thoughts on the subject
Hi All,
The idea of using NTRIP to make a Windows Mobile GPS device sub-meter accurate crossed my mind. After some research I found this thread.
Unfortunately, I haven't been able to find any software capable of doing this. My idea is that it should be possible to accomplish this goal, using a combination of existing tools (which would be really cool!).
As wg5566 notes, there is a (WM) tool called GNSS Internet Radio, which is capable of downloading NTRIP corrections. It turns out this software works, but does have some flaws. Someone wrote another open source tool which is better (?), but unfortunately it isn't built for Windows Mobile (see: http://lefebure.com/software/).
More searching revealed a (dead?) project on codeplex: SharpGPS. It's an unfinished demo. It does however seem to be designed to do exactly what we're suggesting in this thread.
My idea: Completing the WM version of SharpGPS with parts of GNSS Internet radio / lefebure NTRIP client should result in a tool that's capable of upgrading a WM devices' gps signal to sub-meter accuracy through RTK/DGPS corrections over NTRIP.
Any ideas / suggestions about this?
It's already been done for the commercial market
Land surveyors, construction companies, and farmers use RTK GPS and RTK GNSS correction services on a regular basis. Some are free and some are paid subscription. They can be either NTRIP protocol with casters or individual TCP or UDP connections. Examples of software available are Carlson SurvCE and MicroSurvey. Read Carlson's support site for how they deal with the data flow using such networks on SurvCE (Windows Mobile and CE).
I have worked in land surveying using such equipment, and it generally requires dual frequency receivers, RTK corrections, and high quality antennas to achieve 1-2cm 95% CI horizontal precision. The current GPS chips in cell phones are only single frequency and so the best you could expect under ideal conditions is 2'-3' precision using some form of differential correction like WAAS or beacon or DGPS via NTRIP. Under average conditions, the precision will likely be in the 10-20' range. The dual frequency receivers take care of the large errors caused by radio waves traveling through the ionosphere.
Due to the limitations of batteries, antennas, and space for more chips in cellphones, the future of location accuracy will likely include some combination of GPS/GLONASS and cellular radio signal frequency timing calculations from cell towers. True Position, with its U-TDOA technology, is one example of measuring the time differences of cell phone radio waves using cell towers with known coordinates. Rumors (from surveying journals) have it that there are current patents in place that can allow for sub foot precision using such methods when sufficient cell towers are present for multilateration.
Has anyone found success on this topic? WM or Android...
Would be very interested, since there is a free NTRIP feed available in Switzerland... anyone?
*bump* it up
Been there still trying. Problem is no carrier phase off internal gps.
Grimli said:
Hi All,
The idea of using NTRIP to make a Windows Mobile GPS device sub-meter accurate crossed my mind. After some research I found this thread.
As wg5566 notes, there is a (WM) tool called GNSS Internet Radio, which is capable of downloading NTRIP corrections. It turns out this software works, but does have some flaws. Someone wrote another open source tool which is better (?), but unfortunately it isn't built for Windows Mobile (see: /lefebure.com/software/).
Click to expand...
Click to collapse
Lance lefebure is a really cool guy I'm sure he wouldn't have any problem building a wm version but it is going to takea lot more than that to get rtk to a cell phone.
Very good ,thanks.
Ed hardy bikini said:
Very good ,thanks.
Click to expand...
Click to collapse
If you are confused just ask questions and I will do my best to answer them. I am in the ag industry and deal with RTK networks and different ways of connecting them and tons of different gps units on a daily basis.
Look at this:
http://stakemill.wordpress.com/2010/07/19/ashtech-mobile-mapper-100-supports-esri-arcpad-10-0/
and this:
http://www.ashtech.com/-2359.kjsp?RH=1272644205746&RF=1270806507068
Is that still a phone !?
wg5566 said:
Look at this:
Is that still a phone !?
Click to expand...
Click to collapse
Nope PDA with support for external GPS with a builtin reciever that even sees glonass satellites (russian constelation). That was made specifically to do RTK mapping. It does have a GSM radio for data to connect to the cors.
Phone positioning using CORS
To perform a CORS (Network Reference correction we need a GGA stream from the GPS in your device. This allows us to remove the anomalies and provde the correction stream. As phones use a sirf II chip or similar they do not have input capability to output the NMEA stream to achieve this.
This one works great! it will connect to an Rtk receiver and get the nmea string from it or will use the internal GPS to be able to register on the CORS network. It will then stream the corrections over Bluetooth to a receiver or even a repeater radio. It won't however correct the internal GPS. http://antrip.dyndns.biz/Home/DownloadTrial