Fake device location updates for the ArcGIS Geotrigger Service.
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Geotrigger Faker [deprecated]

Fake device location updates for the ArcGIS Geotrigger Service

Build Status npm

Geotrigger Faker is a tiny javascript utility to fake device updates when testing an application that uses the ArcGIS Geotrigger Service.

This is the open source version of the Geotrigger Faker available for Esri customers on the ArcGIS for Developers site. Read more about the faker here, and find out more about the Esri Geotrigger Service here.


  • Register a new device using a valid ArcGIS Client ID
  • Authenticate as a preexisting device using an ArcGIS Client ID and Refresh Token
  • Send location updates to test existing Geotrigger rules


npm install geotrigger-faker


Server (Node.js)

var Geotrigger.Faker = require('geotrigger-faker');

var faker = new Geotrigger.Faker({
  clientId: 'XXXXXX'

var update = {
  longitude: -122.716598510742, // required
  latitude: 45.5780033058926, // required
  accuracy: 10.0, // optional, defaults to 10.0
  trackingProfile: 'adaptive' // optional, default to 'adaptive'

faker.send(update, function(error, response) {
  // do something


The geotrigger-faker library relies on Geotrigger.js, which requires CORS support or a server-side proxy when running in a browser. Read more about browser support here.

<!doctype html>
<html lang="en">
  <meta charset="UTF-8">
  <title>Geotrigger Faker</title>
  <script src="/path/to/geotrigger.js"></script>
  <script src="/path/to/geotrigger-faker.js"></script>
    var device = new Geotrigger.Faker({
      clientId: 'XXXXXX'

    var update = {
      longitude: -122.716598510742, // required
      latitude: 45.5780033058926, // required
      accuracy: 10.0, // optional, defaults to 10.0
      trackingProfile: 'adaptive' // optional, defaults to 'adaptive'

    device.send(update, function(error, response) {
      // do something



Constructor function to register a device. Expects options to be an object with a required clientId property.

var device = new Geotrigger.Faker({
  clientId: 'XXXXXX',      // required
  refreshToken: 'XXXXXXX', // optional
  proxy: '/path/to/proxy'  // optional

You can include an optional refreshToken property if you want to use an existing device. See the refresh token section below for details on how to retrieve that information from a device.

If you need to use a proxy to support older browsers, you can supply the path to your proxy with the proxy property. See the section on browser support in the Geotrigger.js README for more information.

A new session will be created using the geotrigger.js Session constructor and is made available as .session (so in the case of the example, it would be available as device.session). The session will also emit a device:ready event when the deviceId and tags have been attached to the device object.

Refresh Token

To retrieve a refresh token from an actual device set the Geotrigger SDK's log level to Debug and run your app on the device. Then search the logs for refreshToken:.

Setting the log level in the iOS SDK, put this line anywhere before your call to setupWithClientId:

[AGSGTGeotriggerManager setLogLevel:AGSGTLogLevelDebug];

The following (or something similar, depending on whether your device was registered previously or not) will show up in your Console as one of the first things after calling setupWithClientId:

2013-12-20 15:19:54.786 [DEBUG  ][AGSGTDevice setClientId:withCompletion:]: Loaded device from disk: {

Setting the log level in the Android SDK is very similar, put this line anywhere before your call to GeotriggerService.init():


When the app is first installed and run, the following (or something very similar) will then show up in your LogCat output after the device has registered itself with our servers:

06-19 11:23:35.409  22681-22766/com.esri.android.geotrigger.debug D/GeotriggerSharedPreferences﹕ refresh_token: iBFTZ02WCglIPTGAojETXhFmLXHAheUAbBz2ZnY8l6naYMsMUNyac4r86jACBMStvzVbeGLFELZqr3ztKKVj35lyObKRz4RSUGRL4CICXGVAK3OS98djWhGB7zWcQHaSfj6GK6XHo6pdUe_KmizNn_iOstjLFwtJG5aKAINiJn53yD8v3yE8IzpbFX3GUn4i7gmCsbx7t1dEuog3TbY5F0n6h4xd4lG8BY0h90jBhgxEAtcjtKoNvApo4Q-GFeMNMX-uTEslBiXs5Q_RmgLOsw..

You should be able to spot it quickly by filtering the LogCat console to look for lines containing refresh_token. As of this writing, the refresh token is 280 characters long.

.send(update, callback)

Method for spoofing device updates. The update parameter can be a single location object, an array of location objects, or an array containing a latitude and longitude (i.e. [0,0]).

  latitude: 0,
  longitude: 0,
  accuracy: 10,
  trackingProfile: 'adaptive',
  timestamp: '2013-10-26T06:34:20.022Z'
}, function (error, response) {
  /* do something here */

.setTags(tags, callback)

Method for setting tags a device is subscribed to. Smart enough to ignore the device's unique tag (prefix device:). Expects tags to be an array.

device.setTags(['mr','cool','ice'], function (error, response) {
  /* do something here */


Node.js & Browser (one file to rule them all)

  • Location: /geotrigger-faker.js
  • Minified version: /geotrigger-faker.min.js

Geotrigger Faker depends on geotrigger.js. You'll always need to include a copy of geotrigger.js when developing for browsers. You'll also need a server-side proxy if you want to support non-CORS browsers like IE 8 and 9.


Geotrigger Faker Web Application

A full-fledged client-side device location faker.

Location: /examples/browser/

Command Line

Location: /examples/cli/cli.js

Can be run with the following command, where XXXXXX is a valid Client ID:

$ node examples/cli/cli.js XXXXXX

Logs a response to the terminal from a dummy location update supplied in the script. A quick way to ensure the library is working and the client ID is valid.


This project uses karma for client-side testing and mocha for server-side testing. Tests can be run with grunt using grunt test or independently using karma start and mocha spec/fakerSpec.js.

See a missing test? Open an issue, or better yet fork the project and open a pull request!

Note: It's been reported that Karma currently opens many unnecessary connections to Safari in Mavericks and Mountain Lion. Running defaults write com.apple.Safari ApplePersistenceIgnoreState YES in the terminal seems to fix this issue.



Find a bug or want to request a new feature? Please let us know by submitting an issue.


Esri welcomes contributions from anyone and everyone. Please see our guidelines for contributing.


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