Coldcard Internal Documentation

These docs are meant for you hackers out there... but also for anyone who wants to understand why it's safe to put your moneys into Coldcard.

pin-entry.md Huge and detailed discussion of PIN codes and the security element that holds the secrets.
dev-access.md How developers can modify Coldcard to extend it.
memory-map.md Memory map highlights
backup-files.md Some details of our encrypted backup files.
electrum-recovery.md Importing seed words into Electrum for funds recovery.
bitcoin-core-usage.md How to use with Bitcoin Core.
limitations.md Documented limitations, policy choices, and TODO items.