i know iphone 4 does not have a NFC chip built in but i am wondering if i can still detect a rfid chip maybe using wifi signal or celluar signal?
You don’t really get low-level enough access to the phone’s radios to let you communicate directly with an RFID tag. Your best bet is to look into external hardware, possibly an Arduino or similar talking to your app via the headphone jack.
Only the iPhone 6 has the required NFC controller to communicate with NFC tags. At this time, it's unclear what SDK might be available to developers:
Reading NFC Tags with iPhone 6 / iOS 8
RFID or NFC chips cannot be detected by WiFi or cellular. This is not possible due to different technology they use. There are external NFC readers available for the iPhone.
Check e.g. here: http://www.icarte.ca/
Related
I really searched on this topic for a while now. Especially when iOS 3 was the latest software version on the iPhone.
I wonder if there is a possibility to connect the iPhone to an external device via Bluetooth using the SDK and retrieve measured data?
Thanks for your help!
Greeting!
mary
If the Bluetooth device can masquerade as a Bluetooth keyboard, then it can send data to an iOS device encoded as keystrokes.
If the Bluetooth device is or can masquerade as a headset, then it might be able to send data encoded by an audio modulation scheme, such as FSK. A matching modem/codec will need to be running in the iOS app.
For the newest iOS devices (4S) you can use the new Bluetooth LE protocol to send data (older Bluetooth data communication protocols are not available to apps unless you are in Apple's NDA MFi program).
You have to look into the MFi Program by apple since you want your devices communicating. It provides support on using an external accessory with your iPhone, though you have to register/pay for it.
After searching on Google, I found that people say it's only possible to connect an iOS device with a non iOS device with the 'MFi program'. Is that true?
My project is mainly focused on sending and receiving information with the Arduino device via Bluetooth directly.
Is communication between iOS and non iOS devices without jailbreak possible? If yes, is there a reference?
(I viewed Stack Overflow question How can an iPhone access another non-iPhone device over wireless or Bluetooth?.)
As I stated in the above-linked question, general Bluetooth communication to external devices on non-jailbroken iOS devices is restricted to MFi-compliant Bluetooth hardware.
However, newer iOS devices (iPhone 4S, new iPad) are capable of Bluetooth 4.0 LE communication with external devices without the need for those devices to be MFi-compliant. This interaction is done through the new Core Bluetooth framework, which lets you send and receive arbitrary data to and from Bluetooth LE devices. This only works with those listed newer iOS devices, though.
Tim points out an interesting hack that you might be able to get away with in making your device appear like a Bluetooth HID keyboard. Devices like this barcode scanner have special modes to appear as HID devices to iOS. You might be able to pull something together based on this, but all data transfer will be one-way from your device, and it looks like this will require entering that data into text fields as if you had a keyboard connected.
Alasdair Alan's "iOS Sensor Apps with Arduino" is a good resource to look at. I've used Wifi with another microprocessor (mbed) but not sure about bluetooth. Alasdair is active on Twitter and he usually is kind enough to answer questions.
I've been trying to find examples on communicating with bluetooth devices on iOS and have been coming up short. As I understand it SPP is not yet supported. At the simplest level, I'd like to send a simple 1 or 0 signal to the bluetooth device I'm creating. (It's a bluetooth switch that would turn something on and off). Is there a way to cleverly do this through the HID or HFP profiles?
The short answer to your question is that you can't connect to an arbitrary Bluetooth device you may happen to have, you can only connect to a Bluetooth device that has come through Apple's licensing program (i.e. the "Made for iPod/iPhone" label). From Apple's documentation:
Q: [The External Accessory framework allows] my application to communicate with Bluetooth devices. So why doesn't my application see the Bluetooth accessory sitting next to my iPhone?
A: The External Accessory framework is designed to allow iOS applications to communicate only with hardware accessories that are developed under Apple's MFi licensee program.
So there is no public API for accessing an arbitrary Bluetooth device from within iOS: you have to go through the External Accessory Framework to communicate via Bluetooth, and the EAF's mission is "communicate with MFi devices," not "communicate with arbitrary external devices." A sufficiently ingenious developer could probably hack something in there, but -
it's a non-trivial undertaking
you are spectacularly unlikely to get past the App Store approval process
So there's just not much percentage in it - the effort of doing so is unlikely to reward you.
If there already exists an MFi device that can be coerced into doing something that you want, that's probably your best chance - short of going through the MFi approval/licensing process yourself, of course. If you want to do so, have at it and good luck.
I'm answering this question late because Zeroxide's answer is incorrect (you can use a random Bluetooth keyboard with your iOS device because Apple implemented that connection, which is different from giving you a public API path to doing likewise) and I find Rokridi's answer to be incomplete-though-headed-in-the-right-direction.
Edit: A caveat has since been added to the linked Apple page about Bluetooth Low-Energy devices. So there's a loophole, but it's not a big one because very, very few Bluetooth LE devices have actually been produced as yet.
As far as i know, if your external device is non iOs device then you should use External Accessory Framework to communicate your application with it. Threfore, you external device should be certified by Apple through the Made for Ipod program (MFI). Hope this helps.
If you want to use classic Bluetooth (not BLE), then you have to first PAIR the iOS device to the Bluetooth device (in Settings). If you can't do that then you can't communicate with it with your app.
NO. whether device is MFi certified or not, you can connect device to iphone if bluetooth profile is HFP, or HID's (ordinary profiles. not iAP profile). Think about bluetooth headset or keyboard. does it need MFi mark on it to use? NO. Never.
I want to develop an application for the iPhone 4GS that supports Bluetooth 4.
The application would continually listen to the data transmitted by a heart rate monitor over Bluetooth, and show information on a screen.
To achieve this, the application would have to listen to the data even when it's not the active foreground application.
Like Android, is it possible to silently listen to Bluetooth events on an iPhone as a background service?
I can't determine exactly what you're asking, but here are two tutorials for incorporating Bluetooth in iOS apps:
iPhone Bluetooth Programming
iOS Bluetooth Programming - Getting devices to see each other
Also, here is Apple's list of Supported Bluetooth profiles.
You won't find serial port profile (SPP) in iOS devices if you're looking for that.
So question about using it in the background would seem irrelevant.
You could use 'old style' FSK modem over BT audio an then decode the signal in
code. On the other hand you should consider going WiFi. Microchips MRF24WB0MA/RM for
example supports adhoc/infrastructure netwroks and it also has Bonjour support.
Is it possible to communicate with an Infrared device (USB Infrared, TV, Mobile Phone, etc) using iOS (iPhone or iPad)?
Well, i know it's possible, since there are many remote/universal remote applications in the AppStore. I basically want to know how?
What are the limitations and
requirements?
What kind of additional hardware is
required? If it's available in the
market?
Which protocols should i know about?
Which iOS libraries can help me in
the process.
Can anyone point me in the right direction. Thanks.
Any devices using IR for controllers are either wifi or have custom hardware that outputs IR signals based off of output from the device. So without using your own hardware, I don't believe this is possible
Infrared isn't unbuilt in iPhone. All those remote apps are wifi based.
The hardware isn't available but there is a hack you can make to the headphone socket.
http://arstechnica.com/apple/news/2011/01/project-hijack-uses-iphone-audio-jack-to-make-cheap-sensors.ars?utm_source=Ars+Technica+Newsletter&utm_campaign=05bfd22285-January_21_2011_Newsletter&utm_medium=email
There is no infrared connectivity within iOS.However there are bluetooth and wifi.Generally you can use bluetooth functionality by importing GameKit framework.Thanks