Retro-crypto can run on an original Nintendo 64 and do symmetric text encryption/decryption, and it can convert user-inputted dice rolls into nostr keys, Bitcoin and Monero wallet addresses, seed phrases, and QR codes. It can also generate keys automatically. The first phase of the project is pretty much complete. Here are some upcoming steps on the roadmap for the next phases: * Adding asymmetric encryption * Adding air-gapped signer functionality, to sign wallet transactions and nostr events (so you could use nostr without your key ever leaving the Nintendo 64) * Getting something similar onto the Game Boy Color, which can receive data from smartphones via infrared port and transmit data back to smartphones via onscreen QR code (less air-gapped but more convenient)