Yes GPRS is the standard way common people have access to the cell based GPRS however, as in the marine system, 98% of devices are GPS receive only but there are GPS send/receive devices that do not have any cell communication capability. These devices work way out on the oceans via GPS uplink (there are no cell towers out away from shore).
In GPRS, a local cell tower receives a GPRS signal from cell technology devices and relays those requests a GPS uplink station which in turn returns the GPS downlink data.
Hi
OK, I found the proper prey configurator and have updated the build as
using sysconfig didn’t seem to save the changes for me. So if you have
installed it please update and run the menu item to add your key/api
again.
>
>JosephKK;2181849 Wrote:
>> On Sat, 26 Jun 2010 11:06:01 GMT,
>>
>> A technical clarification: The terrestrial segment of GPS is receive
>> only. The reporting function is done via GPRS or similar cell phone
>> based data service.
>
>Yes GPRS is the standard way common people have access to the cell
>based GPRS however, as in the marine system, 98% of devices are GPS
>receive only but there are GPS send/receive devices that do not have any
>cell communication capability. These devices work way out on the oceans
>via GPS uplink (there are no cell towers out away from shore).
No. There are no GPS send devices. The number of codes in the code
space used for GPS can only support a handful of stations beyond a full
constellation in the space segment. The GPS devices that you can buy are
receive only.
There are satellite cell phone systems/services (Iridium) that can
provide the reporting function over 90% of the globe.
>
>In GPRS, a local cell tower receives a GPRS signal from cell technology
>devices and relays those requests a GPS uplink station which in turn
>returns the GPS downlink data.
>
>JosephKK;2181849 Wrote:
>> On Sat, 26 Jun 2010 11:06:01 GMT,
>>
>> A technical clarification: The terrestrial segment of GPS is receive
>> only. The reporting function is done via GPRS or similar cell phone
>> based data service.
>
>Yes GPRS is the standard way common people have access to the cell
>based GPRS however, as in the marine system, 98% of devices are GPS
>receive only but there are GPS send/receive devices that do not have any
>cell communication capability. These devices work way out on the oceans
>via GPS uplink (there are no cell towers out away from shore).
>
>In GPRS, a local cell tower receives a GPRS signal from cell technology
>devices and relays those requests a GPS uplink station which in turn
>returns the GPS downlink data.
Wrong again. Cell towers including GPRS, UMTS, HSPDA all talk to the
normal fiber optic infrastructure, though sometimes through a terrestrial
only microwave link.
If anybody tried transmitting to the GPS satellites they would quickly
find themselves in jail. The US Military owns the satellites. They just
let civilians use the signals they transmit for similar positioning
purposes.
Do notice the persistent use of receiver in the Wikipedia article:
I finally got around to installing this in openSUSE-11.3 (on my Dell Studio 1537 laptop - I want it functional for my vacation - I leave tomorrow for 3 weeks) … and I’m currently testing it to see if it works (on 11.3 on this laptop).
alright I just got a new laptop about 2 days ago got my system all configured the way I like it and finally downloaded prey…I have edited the config file with my api and device key and when I run the prey.sh shell I get the following message
– Looking for connection…
– Got network connection!
– Checking URL…
>> Verifying status…
– Got status code 400!
– Nothing to worry about.
– Cleaning up!
now what exactly is that supposed to mean? my device is still unverified and I’m completely lost at this point…the readme is pretty much worthless on the subject…can anyone please help me on getting this up and running? Thanks
Hi
You just need to run prey.sh as root user, this will create the crontab
entry (check with the command crontab -l). I still have an open query on
the configuration GUI, this can be run as your user.
I’ve been doing some minor edits, so just confirm you have the latest
which is prey-0.4.3-11.1
In my case on openSUSE-11.3 (64-bit) with KDE-4.4.4 to install prey I needed to use “kdesu prey” , although it is possible that "su - " followed by “prey” would have worked (I did not try that).
So at present you need to manually edit the /usr/share/prey/config file (as root) with your keys, then all you need to do is run (as root)
/usr/share/prey/prey.sh
This will setup the cronjob for the root user and then you can mark it missing and either wait for the cronjob to run, else run the above command.
The prey menu entry and prey script (in /usr/bin) are functional as such, but won’t configure/save/run prey.sh to create the cronjob until it’s fixed in 0.4.4.
You run either the menu entry or /usr/bin/prey as your USER only and not root (it will popup the gui to enter the root password), I have set the permissions so only root can run and view the config for extra security.
have you been using prey on your macbook??