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The original was posted on /r/monero by /u/rbrunner7 on 2024-10-31 19:48:33+00:00.

The short story: vthor, a dev that joined the Monero project a while ago, is looking for donations through the CCS, to write software that will bring XmrSigner (formerly called MoneroSigner) to production quality and therefore into the hands of users. That software will turn a Raspberry Pi single-board computer into a Monero “cold signing” device - something like a hardware wallet.

Find more info here on X or on the FAQ page of the older MoneroSigner website. Go here to donate:

IMHO a true community-driven Monero hardware wallet would be a welcome addition to commercial hardware wallet offers.

The background story: Out of the many existing cryptocurrency hardware wallets, currently only two support XMR: Trezor and Ledger. Only one of them uses open source software, Trezor. Both use fully proprietary hardware. To improve this far-from-ideal state of affairs, a dev called Monero-HackerIndustrial started the MoneroSigner project in summer 2022 (original CCS to finance, project website).

For unclear reasons, that dev did not complete the project, and so a new dev called vthor took over - “ressurection” CCS with funds reallocated.

In a refreshingly short time he could successfully complete a version of the software that worked (announcement in the Monero Observer), but unfortunately it ran too slowly to be really practical to use. That’s why vthor worked out a way to rewrite parts of the software to achieve a significant speedup and bring XmrSigner finally to production quality. This new CCS is now open for donations to finance this hopefully final step in the MoneroSigner saga.

With 196 XMR the library in question certainly has its price, but processing the quite complex Monero transactions with good performance on a low-power device is indeed a challenge, and the library won’t be XmrSigner specific, meaning that other future projects could profit from it as well.