# Trezor Core  [](https://travis-ci.org/trezor/trezor-core) [](https://gitter.im/trezor/community) This is the source code for 2nd generation of Trezor called Trezor model T. It runs both inside of the device and also in the Trezor Emulator.  ## Documentation The documentation can be found in the `docs` folder. See [SUMMARY.md](docs/SUMMARY.md) for a list of topics. The documentation is also automatically built into a HTML format using [mdBook](https://github.com/rust-lang-nursery/mdBook) and deployed to [https://docs.trezor.io](https://docs.trezor.io/trezor-firmware/core/), where you can read it in a well arranged way.