Device tracking without wifi or gps - geolocation

This isn't necessarily a specific code question, but more just hoping that someone might be able to point me in the right direction. I'm making an outdoors/hiking app and one of the features I'd like to build is a trail progress tracker. I've seen other apps that do this, namely maps.me, and it somehow is able to continue to track your location on a topo map even after gps and wifi are inaccessible. I've been trying to research information on how this is done but coming up with nothing, possibly because there's maybe some terminology involved that I'm not familiar with. If anyone can offer any links or hints as to what I should be looking up in relation to this, that would be fantastic.
Thanks!

Related

Settings in iPhone errors

So silly question here but if someone would humor me and lend any advice I would appreciate it SO much. I’ve had some issues since I’ve created my apple account, but one thing I keep noticing specifically that confuses me (my Apple ID once said it can not be changed, now it allows me the option to change my Apple ID and phone/email everything)
I wouldn’t be so concerned with this, but I’ve had reasons for safety/security concerns and then I noticed this. I see many “null” type messages in my data when I view it directly from my device as well. I’m not tech savvy at all so this is all beyond me. Forgive me please if I’m not posting this correctly. I receive error messages from apple when trying to download my data even. I’ve updated and reset my phone before but it doesn’t help. I want to just know this is user error on my end but I’m not finding information to confirm that anywhere I try to look. Thank you so much for anyone who might be able to point me in the right direction.

Using Twisted to track GPS Locations on an iPhone

Recently, while developing an app on the iPhone, I came across the problem of tracking vehicles. It was easy to track the vehicles on a map if they were stationary using Parse ( although not sure if it was the best method) but the issue was tracking vehicles if they were moving. I didn't want to query for geopoints in Parse unnecessarily if the location of the vehicle did not change. I was steered towards using Twisted, and after doing some investigation, realized this might be a solution. Using the reactor loop, when locations were changed I could notify the other users and update their maps appropriately. Conceptually, I understand this problem but having trouble finding information or help regarding GPS with twisted.
I currently have been running the gps example from the site, http://twistedmatrix.com/documents/12.0.0/core/examples/gpsfix.py
Using my MacBook pro to test, I found the available serial port and it attempts to open as a NMEAReciever but I was expecting a GPS location to be written. Once I can understand how to interact with the GPS, I feel I could tackle communicating this information through the iPhone with NSStreams such in the fashion of this tutorial except instead of sending text messages, it will be sending GPS locations
http://www.raywenderlich.com/3932/networking-tutorial-for-ios-how-to-create-a-socket-based-iphone-app-and-server
Overall, my question is how can I access the GPS coordinates of a device using Twisted through the tutorial provided. I hope my question was detailed enough and I would be more than happy to correspond with someone any more details. Thank you
I (eventually) wrote twisted.positioning, which is essentially a better version of the twisted.protocols.gps thing you're using. It has much nicer abstractions over concepts like positions, as well as receivers. That may be interesting to you, because it provides abstractions that you can use to e.g. combine information from GPS and other sources (like compass). However, I think that in iOS-land, that job is already (mostly) handled by Core Location. I'd assume that the best course of action is too hook that up to twisted.positioning (shouldn't be particularly difficult, can't be anywhere nearly as hard as NMEA is, at least!). Lacking iOS development experience, I can't tell you how to access Core Location from Python; I can only point at the docs.
twisted.positioning is also an improvement when it comes to documentation. Unfortunately, that wasn't very difficult, because its predecessor came with none at all. I hope the one scant example that is provided helps, though; and I'd be more than happy to elaborate if it doesn't.

Use both GPS and Scan function in same channel with Junaio AR

As the title says, im simply wondering if it is possible to use the GPS tracking and POI part of junaio, and att the same time use the scan functionality to scan and recognize images. Im working with a group at a project which demands that we use both functionalities, and we are at the moment stuck on trying to send 2 XML documents, causing the server to return nothing at all. I simply want to know if it is possible to use both functionalities in the same channel, and I would greatly appriciate if someone would point me in a direction which could help me solve our problems, since I've been able to find absolutley nothing on my own. Thanks beforehand!
Scan + GPS/compass is not possible at the moment.
However, it's possible to use GPS/compass tracking and continuous visual search at the same time. This might be the closest thing to your requirements.
You might find more information on http://helpdesk.metaio.com

Why would I need simplegeo?

I'm building a simple location-based service where users find out stuff near them based on their positions. I've heard a lot about simplegeo but can't seem to figure out where exactly I'll need their service. Their website doesn't seem to help too as far as product description is concerned. Can anyone enlighten me as to how the fit in?

Do you chat online for work purposes?

I've worked with folks who are chatting online with their peers, constantly batting around ideas. I've also worked with folks who adamantly refuse and think it's a waste of time.
Are online live chatting forums of particular use to you? Why or why not?
Internal to your company, or external and world-wide?
Does your employer encourage or discourage their use?
Update: I see some people are voting this question down, yet so far all the answers have been positive, if with some reservations. If someone has a strong negative opinion (I hate online chatting and think it should be banned etc.) I'd really like to hear why.
If you have telecommuters, not chatting online will be the death of you.
Without chat, there is no interaction.
Without interaction, there is no problem solving.
Without problem solving, the code will suck.
The chatting part does waste a lot of time and I often wish I could just pull them out and just WriteSomeCode, but yeah, trade off scenario.
There's an additional benefit to using online converstations, in that it doesn't /have/ to be an interruption. If your working on something you can ignore them till you're done and they just have to deal with it. In real life you have a talking face to try get rid of. ( And the cool thing here is you can ignore them and they still get heard, have your cake and eat it too! )
I've used IM at the last three places I have worked. Currently the building that I am in is so large that it takes a couple of minutes just to walk to my managers office. Then there are the days that we work from home (1-2 days a week). Email for some purposes just doesn't cut it and the phone can be too disruptive and all encompassing for some tasks.
When I was doing consulting work I would give my IM contact information to my clients. About 25% of them would use it to contact me and I am still in contact with them to this day which opens up the possibility for future work! The clients that used IM felt that they had a better connection with me because they could see when I was online and available to talk.
I'm still in contact with old work colleagues through IM and this allows me quick access to their knowledge base as well.
My suggestions for using IM in the workplace are:
Use a client that supports multiple
protocols (MSN, Yahoo, AIM, Jaber,
etc)
Setup and use personal accounts for
each of the networks you are on
(i.e. don't use accounts tied
directly to your work)
Make sure your IM client records a
history of all of your conversations
Always be available but minimize
personal conversations
Provide your IM information freely
to friends, clients, and colleagues
Add appropriate groups (i.e.
friends, family, work) and filters
to reduce undesired interruptions
while still being available if
needed
Don't feel that you have to
respond to every chat request. Let
it set until you are ready to deal
with it
One other trick I use is to use text to speech software so that when a chat message comes in it is read allowed. When I am at home (or preoccupied away from the computer in the office) the message is automatically read allowed (I liken it to a ringing phone call) in order to get my attention. But, I don't have to stop what I am doing in order to know what the message is.
I used to. I found it a great resource to chat with people I used to work with. In our business I find that we tend to network alot and using that collective knowledge is awesome. Of course my company turned that off so they lose.
I know that a certain large Bank hasd an internal AIM setup so that they can IM each other. That was refreshing and dang useful. They also allowed some external access. Talk about getting the value of IM!
Yes, absolutly, I work with most of my employees, and employers via MSN/Yahoo/Skype/.../ it makes the work easier, because I can hire the better people without having to pay them to move to me.
When I need to collaborate with someone in another office, it's great ... when I'm deep in thought, I have to turn it off (just like e-mail).
It depends on the group dynamics and personal preferences. Personally, I have enjoyed my work groups that use chat to feed on each other's ideas and troubleshoot without as much walking around. If you are geography dispersed, its almost a necessity.
I find online chatting invaluable in many cases, but not normally instant messaging. Since I use many open source technologies at work, I tend to join the respective IRC channels, both to ask questions there, and sometimes to help others if I know the answer offhand.
It may depend on the work environment. As a self employed consultant, I'm always in chat - it's my primary communication to the world, along with emails for more official type communications.
Being able to converse with others creates synergy, but it also can cause distractions. A good manager can tell the difference.
At my last workplace, we used IM extensively for collaboration. Not so much at my present workplace. Infact, i have not once had to do that here in 6 months. But i do look around on the net for answers and sometimes i have posted queries on forums too. IM is a nice tool to have, but its also a time sink. Also, dont underestimate the lost focus. Its particularly hard to concentrate on getting that algo implemented right if someones constantly pinging you about how to establish a connection to an oracle database.
I work at home 2 to 3 days a week. I mainly use MSN to stay in touch with my coworkers. It's pretty useful to ask short questions quickly. If we find ourselves typing whole conversations we often agree to continue the conversation by phone.
I use IM to communicate with colleagues in other offices when it replaces a face-to-face chat. I turn off notifications in all my comms apps at work though, because they distract me otherwise.
I telecommute from California to Colorado and never have used chat. We do have daily SCRUM meetings and constant email threads. When I first started working remotely, we did try it but it seemed intrusive to several co-workers so we stopped using it, that was 4 years ago, I probably should give it another try.
It seems I have nothing to really add to what hasn't already been written.
I use it extensively, especially when remote people are involved in development. Without it your real time communication dies. It is the only viable method of communication that isn't as interruptive as phone calls or something of that nature. As we all know we can't just sit on the phone the whole time when developing, so chat is the next best thing for real time communication.
I personally don't like it. I think email allows you to take a little time to compose your thoughts.
IM seems to work for other people though. Whatever works!
Our entire business unit telecommutes. Only us first years are required to be in the office, so our enterprise IM solution is vital to staying in touch and on task. Its how my manager lets me know what project I'm working on, if I need to bill my time to another customer, or if I need to bounce ideas around. So yes, I do. Is it open for anyone to get on? No, not at all. You have to be on the intranet to access the system, and it is closed to any and all outsiders.
Out of the four professional jobs I've had over the past 8 years or so, I've only worked at one place that did not allow any type of instant messaging. All the other companies had at least some type of setup for intranet instant messaging.
I think that IM is almost necessary in today's business environment. I don't IM very much, but it's nice to have it available. Especially when I just need a quick answer to a question - like "Where is this file located?" and then boom I have a link to the file pop up right in front of my face.
I use IRC at work - it's almost a requirement for all of us who interact remotely (workign from home, different offices, and client sites) to be able to get help on problems fast.
Yup. It's actually required here. But only MSN though. We use it for development/task related communications with the team... which also help minimize noise since this company I'm currently working in is a big one where 90% are developers so utter silence is a MUST...
But if I've got questions to other members of the team, I prefer asking it personally though because I find it hard to explain some things when just chatting...
I've had to use it in my last job as my co-workers lived in the UK and my boss worked in California whereas I'm in Atlanta. It was used for quick questions and when it was "whenever you get the chance to respond" type thing. I could be on the phone and an IM pop-up and they would get an automatic message telling them that. Longer discussions were done with web cam and telephone and the ability to share a desktop to view code, data, etc.
My company won't allow it. Even if we run a IM server in house (so we aren't wasting time chatting with friends). I've tried to convince them, I find it really useful for knowing if someone is at their desk or not. The phones don't do that so well since if you don't pick up it redirects to a secretary that will get pissed if you are checking if someone's back every 5 min...
So I run a IM client on my phone so I can at least chat with a few people through out the day. (Less interrupting to others if my wife IMs me vs calls me and also easier to ignore if I need to).

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