I am trying to make an app which allows only single account per device. Now what I am trying to know is a property of a phone which never changes. At first I thought I could save MAC address of a device in my database but I read in one of the question on SO that know in android when we try to access MAC address programatically we get a constant that is same for every device.
I would like to know what never changing property of an android device can I access programatically.
Also in future I would like to develop that app for iOS, is there same non changing property of iOS phone that I can access programatically ?
Thank you.
For this purpose, you have to differentiate between devices.
For Android, you can use Device ID
For IOS, You can use vendor ID link.
For IOS : When your app deleted and reinstalled then vendor ID changes so it is better to store your vendor id in keychain using below code.
-(NSString *)getUniqueDeviceIdentifier
{
NSString *yourAppName=[[[NSBundle mainBundle] infoDictionary] objectForKey:(NSString*)kCFBundleNameKey];
NSString *applicationUUIDStr = [SSKeychain passwordForService:appName account:#“Your_App_Name”];
if (applicationUUIDStr == nil)
{
applicationUUIDStr = [[[UIDevice currentDevice] identifierForVendor] UUIDString];
[SSKeychain setPassword:strApplicationUUID forService:appName account:#"Your_App_Name"];
}
return applicationUUIDStr;
}
Im pretty sure these days you can use mac addresses, however if not have you tried IMEI, i have no idea how this would be done.
Related
I'm making a pair of website-based apps for both Android and iOS interfaces, and I'm struggling with a part of it. Perhaps you guys could help me out!
I'm using Android Studio and Xcode, and launching the website through WebKit and WK WebView respectively. It's super simple, just an app which calls a website into it directly. No external navigation, nothing but a full-page website. And this part is working great!
But I do have one problem! I don't want my users to get consistently logged out if they close the app, or after a few hours of not using it. I'd like it to stay logged in for them, or to automatically log-in when they use it.
The maker of the website has given me a way to do this through the URL.
Basically, my URL currently is set up like "https://URL.com/x/y/z" and it goes to the website, and that is great, but I need to set it up to be "https://url.com/x/y/z/[insert user's IMEI or UDID here]". That unique ID from their Android device will keep them logged in. I've tested it using my own device with my own IMEI and it works great, but obviously using one specific identifier for everyone will not work. I just need it to call the specific user's IMEI or UDID into the URL, to complete it.
How should I go about this?
I am assuming that you are talking about an Android app that visualizes a website in an activity. On Android, you can retrieve the device's IMEI OR MEID string by calling:
android.telephony.TelephonyManager.getDeviceId().
But be warned, this requires that you add a permission to your manifest:
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
You should inform your users why you are requesting this permission.
For iOS/Xcode, you can get the device UUID via UIDevice:
// Swift 4
let uuid = UIDevice.current.identifierForVendor!.uuidString
If you are targeting iOS 11 or newer, Apple introduced Device Check to get a device specific token. I personally haven't used it, but it sounds like it's use case is similar to what you're looking for.
Update:
From your comment, here is how'd you include it in the url string.
let urlString = "url.com/x/y/z/" + uuid
I'm currently planning on creating an app. Unfortunately the need for usercreation is there. I know users don't like goind through a registration process with opt in by email activation link click.
So I thought maybe using the apple/google id as a replacement for email address would be cool since the verification step by email can be dropped. In addition when the user changes his or her mail address that's no problem since his or her id doesn't change in this case.
I'm not really into this particular topic so I have some questions, any help is highly appreciated:
Is there any numeric/alphanumeric id anyway or is the google/apple id (i.e. the "username") the email address itself?
Is this possible in Android and Apple SDK (and Cordova in addition since I use this one)?
Is this a good idea in general or am I missing something?
Thanks in advance!
You could use the below DeviceIDs solutions as primary key for your users registrations. Look:
1 - Android
1.1 - Android Phones (With SIM chip) - For Android I use the Cordova SIM plugin. It generates uniqueIDs for devices based on SIM chip informations. So, you can manipulate your data based on the plugins return;
Link: https://github.com/pbakondy/cordova-plugin-sim
1.2 - Adroid Tablets - The plugin above is fantastic, but it does not work for devices that does not have any SIM chip. In this case, I use the following code:
if(mContext == null){
mContext = this.cordova.getActivity();
if(dialog == null){
dialog = new ProgressDialog(mContext);
}
}
String tabletID = Secure.getString(mContext.getContentResolver(), Secure.ANDROID_ID);
Conclusion: If you are developing only for phones (App projected for Mobile Phone) you should use the plugin. If your App targets Tablets or devices without SIM card, than you can take a look at the other solution. The IDs generated are "Devices ID", unique for each device.
2 - iOS
For iOS, I use the following code to generate an unique ID for each device:
NSString *uniqueIdentifier = [[[UIDevice currentDevice] identifierForVendor] UUIDString];
The only problem: When user uninstalls all Apps of your iTunes vendor ID from the device and installs any of them again, the ID will be changed. Other easy ways to get Unique ID for iOS is deprecated since version 7.0 of the system.
See more here: Device Id from an iphone app
please don't make my post like as duplicate why because am totally confused with those post when i google it.
but i need your valuable statements and real time experience on How to get UNIQUE IDENTIFIER for iOS,Android and Windows Mobiles
i have a scenario that when user login with UserName and Password i send details to server at same time i need to send Device UUID. By using device UUID and User Credentials am going to Restrict second user login when first user is already logged in(Active). but am confused with getting iOS Device UUID but wheen i seen in many post iOS is killing apps in App store when app is Accessing any UUID values.
please suggest me better way to complete mytask.
Link-1
Link-2
sorry for my bad english....!!!
You can use the Unique Device ID plugin.
Install it:
cordova plugin add cordova-plugin-uniquedeviceid
And use it:
window.plugins.uniqueDeviceID.get(function(uuid){
console.log("Unique ID": +uuid);
}, function(error){
console.error(error);
});
This will give you a unique ID per device that persists between installs.
Note that on Android 6 it requires telephony run-time permission to access SIM ID. Also you may need to fork it and update it to get the Windows Phone 8 code working on Windows 10 Mobile.
in the case of angular
you gotta install ngx-device-detector via npm then import it on your module and in the import section add DeviceDetectorModule.forRoot().then in the component you're gonna use import it and add private deviceService: DeviceDetectorService this in the constructor it will generate u a method and add it on the constructor this.epicFunction(), if it doesnt paste this
epicFunction() {
console.log('hello `Home` component');
this.deviceId = this.deviceService.getDeviceInfo();
const isMobile = this.deviceService.isMobile();
const isTablet = this.deviceService.isTablet();
const isDesktopDevice = this.deviceService.isDesktop();
console.log(this.deviceId);
console.log(isMobile); // returns if the device is a mobile device (android / iPhone / windows-phone etc)
console.log(isTablet); // returns if the device us a tablet (iPad etc)
console.log(isDesktopDevice); // returns if the app is running on a Desktop browser.
}
note: the "this.deviceId" is a variable i created in the start of the class
in the case of android just import the security and add the permission on the manifest file
I am working on an APP using Xamarin MonoTouch, this App requires custom licence key as provided by us. To identify each and every installation we have to store some kind of device information to control misuse of App.
After trying various ways, now the problems are:
Device Id or Android id : gets changed every time a device is factory reset or format.
Settings.System.GetString(this.ContentResolver, Settings.Secure.AndroidId);
IMEI Number: No SIM Tabs dont have. Double SIM phones have no fix slot wise imei and sends randomly chose one.
var telephonyManager = (TelephonyManager)GetSystemService(TelephonyService);
string imei = telephonyManager.DeviceId;
WIFI Mac Address: Good way but some sets like HTC and Chinese ones throwing exception while retrieving mac address, but works some time. SO not getting fix id everytime app starts.
WifiManager wm = (WifiManager)GetSystemService(WifiService);
string macid = wm.ConnectionInfo.MacAddress;
So everytime any of the above ID fails, user needs to re register app again and again. Do we have any fool proof way of doing this?
Ok, as per comment by Matt, since there is not fool-proof method of getting unique id from an android device. So I have made a provision of validating installations against WIFI Mac ID and Android ID both. If any one of these found matched then installation is genuine or spoofed.
I am making some application that will be largely user driven and of course that means their will be trouble makers who probably will enter fake data into it using swear words or worse change valid data to bad data(ie changing to swear words)
Of course measures will be taken to try to curb this but in the end of the day I want to have the option to ban someone from my application.
My first thought is ban their account by email address. I was also thinking that maybe on top of that ban their devices.
My questions is is what unique id can I use from their phone if they use
Andriod
Iphone
Blackberry
Windows Phone 7/8
and how unique is it? Can it be easily changed?
For Windows Phone you should be able to use DeviceExtendedProperties. Specifically the DeviceUniqueId property.
Be aware though that, as they say in that article, if you use a device id to ban a user, then any future user of that same device will be banned from your app, even if they've done nothing wrong.
There are 2 identifiers that can be used together to identify a specific device and user.
The DeviceUniqueId and WindowsLiveAnonymousId
the first one is the device, and as noted, anyone who uses the device after the banned user will also be banned.
The WindowsLiveAnonymousId is unique to the user. I have seen this same identifier across 3 separate devices and it is always the same for the users LiveId.
I use the following 2 methods to get these ids for identifying game players for leader-boards:
//Note: to get a result requires ID_CAP_IDENTITY_DEVICE
// to be added to the capabilities of the WMAppManifest
// this will then warn users in marketplace
public static byte[] GetDeviceUniqueId()
{
byte[] result = null;
object uniqueId;
if (DeviceExtendedProperties.TryGetValue("DeviceUniqueId", out uniqueId))
result = (byte[])uniqueId;
return result;
}
// NOTE: to get a result requires ID_CAP_IDENTITY_USER
// to be added to the capabilities of the WMAppManifest
// this will then warn users in marketplace
public static string GetWindowsLiveAnonymousId()
{
string result = String.Empty;
object anid;
if (UserExtendedProperties.TryGetValue("ANID", out anid))
{
if (anid != null && anid.ToString().Length >= (AnidLength + AnidOffset))
{
result = anid.ToString().Substring(AnidOffset, AnidLength);
}
}
return result;
}
They are used as such:
string deviceUniqueId = String.Empty;
for (int i = 0; i < GetDeviceUniqueId().GetLength(0); i++)
{
deviceUniqueId += GetDeviceUniqueId().GetValue(i);
}
DeviceUniqueIDTextBlock.Text = deviceUniqueId;
WindowsLiveAnonymousIDTextBlock.Text = GetWindowsLiveAnonymousId().ToString(CultureInfo.InvariantCulture);
I did a post last May about getting system info on WP7. This code is found here: http://www.adambenoit.com/applications/system-info-windows-phone/
Hope this helps.
All these devices have network interfaces with unique MAC addresses which by definition are constant - the MAC address is burned into the hardware and cannot be [easily] spoofed, especially on a mobile device. I would hash the MAC address and use that as the key. Pretty common practice on iOS once apple banned the use of UDIDs.
I would use the guid method. Though this can be circumvented by uninstalling and re-installing the app. Nothings perfect though
How to create a GUID/UUID using the iPhone SDK
How to get GUID in android?
How to create a GUID on Windows Phone
http://msdn.microsoft.com/en-us/library/system.guid.newguid(v=vs.95).aspx
How to create a GUID on Blackberry http://supportforums.blackberry.com/t5/Java-Development/how-to-generate-GUID/td-p/289947