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+Ecosystem Telemetry (obsolete)
+==============================
+
+This module transmits Ecosystem Telemetry from Firefox Desktop.
+It is only sent for Firefox Account users, using a single ping type
+"account-ecosystem"
+
+.. note::
+
+  You might like to read the `background information on Ecosystem
+  Telemetry <https://mozilla.github.io/ecosystem-platform/docs/features/firefox-accounts/ecosystem-telemetry/>`_
+
+The existing telemetry client id is **not** submitted with the ping, but an
+"ecosystem client id" is - this has the same semantics as the existing
+client id, although is a different value, and is not sent in any other ping.
+
+An anonymized user ID is submitted with each ping - `read more about these
+IDs and how they're designed to safeguard user privacy <https://mozilla.github.io/ecosystem-platform/docs/features/firefox-accounts/ecosystem-telemetry/>`_
+
+A reduced Telemetry environment is submitted in the ping, as described below.
+
+Environment
+-----------
+
+In an effort to reduce the possibility of fingerprinting, we only provide the
+following environment subset:
+
+.. code-block:: js
+
+    {
+      settings: {
+        locale: <string>, // e.g. "it", null on failure
+      },
+      system: {
+        memoryMB: <number>,
+        os: {
+            name: <string>, // e.g. "Windows_NT", null on failure
+            version: <string>, // e.g. "6.1", null on failure
+            locale: <string>, // "en" or null on failure
+        },
+        cpu: {
+          speedMHz: <number>, // cpu clock speed in MHz
+        }
+      },
+      profile: {
+        creationDate: <integer>, // integer days since UNIX epoch, e.g. 16446
+        firstUseDate: <integer>, // integer days since UNIX epoch, e.g. 16446 - optional
+      }
+    }
+
+account-ecosystem ping
+----------------------
+
+.. code-block:: js
+
+    {
+      "type": "account-ecosystem",
+      ... common ping data
+      "environment": { ... }, // as above
+      "payload": {
+        "reason": <string>, // Why the ping was submitted
+        "ecosystemAnonId": <string>, // The anonymized ID, as described above.
+        "ecosystemClientId": <guid>, // The ecosystem client ID as described above.
+        "duration": <number>, // duration since ping was last sent or since the beginning of the Firefox session in seconds
+        "histograms": {...},
+        "keyedHistograms": {...},
+        "scalars": {...},
+        "keyedScalars": {...},
+      }
+    }
+
+reason
+~~~~~~
+The ``reason`` field contains the information about why the "account-ecosystem" ping was submitted:
+
+* ``periodic`` - Sent roughly every 24 hours
+* ``shutdown`` - Sent on shutdown
+* ``logout`` - Sent when the user logs out
+
+histograms and keyedHistograms
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+This section contains the :doc:`../collection/histograms` that are valid for the account-ecosystem ping, per process.
+The recorded histograms are described in `Histograms.json <https://searchfox.org/mozilla-central/source/toolkit/components/telemetry/Histograms.json>`_, marked with the `account-ecosystem` store.
+
+scalars and keyedScalars
+~~~~~~~~~~~~~~~~~~~~~~~~
+This section contains the :doc:`../collection/scalars` that are valid for the account-ecosystem ping, per process.
+Scalars are only submitted if data was added to them.
+The recorded scalars are described in `Scalars.yaml <https://searchfox.org/mozilla-central/source/toolkit/components/telemetry/Scalars.yaml>`_, marked with the `account-ecosystem` store.
+
+Send behavior
+-------------
+
+Without an account
+~~~~~~~~~~~~~~~~~~
+
+Never.
+
+When a user logs into Firefox Accounts, this ping is submitted as described in
+"With an account" below. No ping is immediately sent.
+
+With an account
+~~~~~~~~~~~~~~~
+
+The ping is submitted; roughly every 24 hours with reason *periodic*. On
+shutdown this ping is submitted with reason *shutdown*.
+
+If the user logs out and disconnects the account, this ping is submitted with
+reason *logout*. While logged out, no pings will be submitted.