I have a door telephone on our office building. When somebody presses the button it calls a telephone number for which we have a simcard. Right now that simcard is in a cellphone. Everytime we have a meeting at our office, we have to pick up the phone and press 3 to open the door. I'm looking for a solution to be able to programatically pick up the phone and press the 3. Does any such software exist? I have googled but found nothing.
TLDR; I need some software (and a sim card reader) that can programmatically pick up the phone when it rings and respond with a 3 on the numpad.
The OS doesn't matter.
Not sure if Stackoverflow is the right place to ask. Let me know if you have suggestions for other better places to ask.
You could try using the SIM Card in a normal 3G USB Dongle and an application called "Gammu" which can answer a call and sendDTMF codes i.e. number presses. I have only used Gammu on linux systems but I believe it works on Windows as well.
Another possible solution:
Setup voicemail for that SIM card, and when you are asked to leave your voicemail message (the message which is played to whoever gets to the voicemail) just press the button #3.
When you want, use call forwarding to redirect all calls to the voicemail. Alternatively, turn off the phone (on most cellular networks this will redirect all calls to the voicemail).
How to get the mobile number of current sim card in real device and how to read meassage from mobile .
I just want to read sim card number and messages of mobile.
Can you please let me know how to resolve it.
Mobile devices don't provide that information for security/privacy reasons. You can access it in some low level Android API's but since this isn't portable we don't expose that.
Notice that apps like whatsapp, uber, gettaxi etc. all ask you to type in your phone number then a verification code sent via an SMS. That's exactly what JAT (which was built with Codename One) does.
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I am looking to develop an application usable on the devices of visitors so that I can tell where they are. The initial idea I had, already done in some museums, is to have a number on specific locations within the museum, they call a phone number, enter that number, and get enhanced content, perhaps audio narration about that space. This is nicely device agnostic, though some WiFi only devices may not have a mechanism to call a phone number, but perhaps having folks on WiFi load a mobile website and choose their location (assuming the number of spots is not too many) from a list, and then click a button.
I'm new to this, and have been brainstorming on this, but I really don't know what I don't know. So here are my questions:
Can I use GPS indoors and get accurate information or will that basically not work in most buildings?
If I use a service like Skyhook Wireless, and use multiple WiFi routers, will I be able to locate the WiFi connected users accurately?
Can I use Bluetooth somehow? Setup for Bluetooth seems like a hassle, but maybe there's a Bluetooth mode that is simpler to use for an application like this?
For devices with a camera, what can I do with an image here. Photo of a QR Code? Are QR code reading libraries built into devices I can use, or would I need to find a library?
Are there are other techniques I might be able to use, maybe counting footsteps with the accelerometer somehow? Or using magnets somehow for devices with a compass?
Suggestions welcome, assume I'm trying to target as many smartphones as practical (Android, iOS, Blackberry, webOS, Windows Phone 7) that are popular in North America. If there is a way to also include devices that are not considered smartphones, that would be great too.
UPDATE
Why indoor navigation is so hard: Your phone can get you to the museum, but it can't guide you to the T-Rex by Nick Farina
UPDATE 2
Brooklyn Museum experiment with QR Codes: too soon to
tell/negative
Very few people can successfully scan and use a QR code
UPDATE 3
Think GPS is cool? IPS will blow your mind
QR codes are your best bet. They're cheap and, for example, in a museum you could put one next to every painting. For devices without a camera, you could choose to print a location-code next to the QR that they could enter manually in an app. Here's another solution as well:
Set up a wifi repeater/booster in each location you want to determine (ex: in a museum, each room) and record the SSID for each router. As the user walks from each room to the next, their device will automatically switch to the repeater with the highest quality signal (the one in that room). Simply have your application test for which SSID the user is connected to.
GPS is not accurate enough and may not work inside buildings and Skyhook wireless is only for one address. Having users call a number and/or go to a website to manually select a location is too many steps for the user, and the user may not have reception to place a call. Bluetooth is a huge hassle.
Can I use GPS indoors and get accurate
information or will that basically not
work in most buildings?
no, GPS needs a clear view of the sky. regardless, the accuracy of GPS is around +/- 50 feet and can be worse.
If I use a service like Skyhook
Wireless, and use multiple WiFi
routers, will I be able to locate the
WiFi connected users accurately?
aGPS is less accurate than GPS.
Can I use Bluetooth somehow?
bluetooth is not location aware.
android 2.3 introduces something called near-field communications. this would theoretically allow the person to wave their phone over a receiver and transmit information. it's quite new and i think the nexus s is the only device with hardware support for this. at best you are looking at some early adopter pain for that one.
Photo of a QR Code? Are QR code
reading libraries built into devices I
can use, or would I need to find a
library?
that's a good idea. QR codes are popular because they are simple. libraries are not part of the SDK but they exist. it would be hard to build one yourself if it came down to that. by the same token, you could just as the user to enter a simple location code. essentially the same thing and might be simpler than aligning the camera for a QR read.
it does depend on your application. if you want this to automatically locate everyone without an user intervention, QR codes / codes won't work because the user has to take some action. even NFC, from what i've read, operates on very short distances so the person would need to wave the phone across something closely not just walk by.
If you're talking indoors, I think you have some great ideas. GPS may be spotty depending on the building, and Wi-Fi triangulation only works if your signal is proportional to the proximity of the user to the unit. Here is my suggestion:
QR Codes sounds like the best option here if you don't mind having them all over the place. If someone can scan a QR code, (which they are on most all platforms, it's just making sure your users have a decoder installed and can actually use it), then you have three things going for you:
You know they have to be in range to scan it...so that's far more accurate than you can get with other location devices.
you can use the QR code to embed a link to a download site or embed the actual information into the QR code if it's not too much.
Most smartphones today have QR code scanner apps built in, and there are libraries (java and .net) that you could use to build your own app.
The downside here of course is that you're assuming the cameras are good enough quality and that someone isn't going to deface your QR code so that subsequent visitors can't read it.
Keep in mind the bump application. They don't use bluetooth or any form of wireless technique to determine if two people are near each other. http://bu.mp/faq
Since you have 1 building that you care about. Why not simply have a root device or network of devices in your building that you care about. This root device would communicate with all the clients to do your bidding.
Maybe cellphones can´t solve your problem, have you considered cameras on each room and a QR code tag on each guest? you might get the images from the security camera since they are infrared. Another way of achieving this is by locating the camera in front of the door so that the guests are always seen by the QR code algorithm.
Cellphones are just too diverse to implement this, have you thought that the guests might not have a cellphone at all?
I want to develop an interface in my computer that will send sms from a text box to the computer attached phone(which has gsm based SIM) and phone will deliver that sms to a particular number(the number will also be given in text field).
I want to know what are the tools i may use for this purpose.What programming languages will be better for this kind of job?(java/.net/php/UNIX shell script).
Somewhat different in terms of use, but the following question probably can get you started with some of the research:
https://stackoverflow.com/questions/238579/free-sms-api
You could download a program called gnokii (I think it works both on Linux and Windows, please check the website). You can connect a very cheap Nokia mobile phone (check the list that are compatible) and send instructions to the cell phone using this program, like sending sms.
I did this some years ago with a very cheap Nokia phone. Of course I had to pay for each SMS sent, but this depends on the plan of your operator.. in my case I bought a SMS packpage for 6 bucks, then I could send 120 SMS (I'm from Brazil, check your location).
Is it possible to disable all communications on a mobile phone (on any brand, like blackberry, iphone or android phone, or even an mp3 player like an ipod) this includes incoming/outgoing calls and text messages, and internet use - for a period of time like an hour or two?
In some way that can't easily be bypassed - like closing the app.
If you take out a SIM card out of a phone that uses them and there is no WiFi network around that should just about do it. Or you can use a phone that doesn't have WiFi (certain older Blackberries I think).
Alternatively something like the iPod Touch in a room without a WiFi network would also do it.
This may be cumbersome, but on a BB device you can likely inject keyboard events in order to turn off the radio. I don't know of a way to use straightforward APIs to disable the radio.
Not sure if this is your goal but you can programatically manipulate the inbox. If a new message arrives while you're "disabled" you can delete it from the inbox.