# Tillitis TKey Licensing

## Main license

Unless otherwise noted, the project sources are licensed under the
terms and conditions of the "GNU General Public License v2.0 only" and
hardware boards under "CERN Open Hardware Licence Version 2 - Strongly
Reciprocal".

The `LICENSES/` directory contains copies of the license texts used by
the sources included in the project source tree.

## SPDX

The project uses single-line references to Unique License Identifiers
as defined by the Linux Foundation's [SPDX project](https://spdx.org/).
The line in each individual source file identifies the license
applicable to that file.

The current set of valid, predefined SPDX identifiers can be found on
the SPDX License List at:

https://spdx.org/licenses/
