Observed arrival · 2026-10-16
diykey: a Safe signer built around a Cardputer
An experimental page for building or emulating a hardware signer for Safe transactions, using a Cardputer and a secure element.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Safe users experimenting with DIY hardware signers
- Worth noticing
- The page says the firmware does not yet return a signature; the key ceremony can irreversibly lock the secure element.
Field notes
For USB hardware access, the page says to use Chrome or Edge on a computer; its browser notice says the emulator works without that connection. It describes two firmware images and says their SHA-256 is checked before writing, but flashing replaces the board’s existing contents. A full flash backup is shown as an option, and the project labels itself testnet-only and unaudited.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue