Scope
This notice applies to the Tracktuned Link wireless USB bridge and its firmware. The Tracktuned Connect hardware is a separate product with a different software stack and is not covered here; its open source attributions will be published alongside its launch.
What's open and what's not
The Tracktuned Link firmware is built on OpenWrt and the Linux kernel. The kernel, BusyBox, and most other components inside it are licensed under the GNU General Public License (GPL) or other free and open source licences. We use them unmodified, as released by their respective projects.
The Tracktuned Link desktop application, the Tracktuned web panel served by the Link device, and this website are proprietary works of Tracktuned. They are not derivatives of any GPL software and are not covered by the GPL.
Corresponding source code (GPLv2 §3)
Under the terms of the GNU General Public License version 2, you are entitled to obtain the complete corresponding source code for the GPL-licensed components of the firmware running on your Link device. We satisfy this in two ways.
1. Direct download
Our OpenWrt build configuration and a reference to the exact upstream commit we built from are available as a downloadable archive:
https://releases.tracktuned.link/tracktuned-link-firmware-source-latest.tar.gz
The archive includes a README with the upstream OpenWrt commit hash and build instructions. Following them produces a working OpenWrt firmware image, built from the same GPL sources at the same versions as our shipped image. It does not produce a Tracktuned-branded firmware. Proprietary Tracktuned components are not included, and GPLv2 does not require us to supply them.
2. Written offer
Tracktuned hereby makes the following written offer, valid for three (3) years from the date of distribution of any Tracktuned Link product:
For any GPL-licensed software contained in the firmware shipped with a Tracktuned Link device, Tracktuned will provide, on request, a complete machine-readable copy of the corresponding source code. The source will be delivered on a medium customarily used for software interchange, for a charge no greater than our reasonable cost of physically performing the source distribution.
To request the source, email [email protected] with the subject line "GPL Source Request", your Tracktuned Link firmware version, and your preferred delivery method. We will respond within ten (10) working days.
This offer is extended to any third party in receipt of a Tracktuned Link product, regardless of whether they purchased it directly from Tracktuned.
Licences
The firmware aggregates many separate works under their own licences. The major ones are the Linux kernel (GPLv2), BusyBox (GPLv2), dropbear SSH (MIT-style), dnsmasq (GPLv2), and the OpenWrt build system and base packages (primarily GPLv2, with some packages under BSD, MIT, Apache 2.0 or other free licences as declared per-package). Per-package licence notices are preserved in the firmware.
Failsafe and the serial console
For transparency: the hardware platform we use does not implement verified or secure boot, so we make no claim that the device is hardened against a determined attacker with physical access. This is a property of the silicon, not a choice on our part. Our security posture rests on network-layer controls and signed firmware updates rather than on the impossibility of physical access.
Reporting a licence concern
If you believe Tracktuned is not complying with the licence terms of any open source component shipped in our products, please email [email protected] with the subject line "Licence Concern". We respond within five working days.
Contact
Source requests and licence questions: [email protected].