Public chalkboard • one-hour memory
Public Chalkboard
Canadian visitors can sign in with Google, write or draw directly on the board, and use the wipe brush to clear any mark. Every stroke is tied to the signed-in account and automatically expires after one hour.
Designed for touch and mouse input on mobile and desktop.
Google sign-in required
To write on the board, users must sign in with Google and appear to be using a Canadian account context or Canadian device locale.
Board is view-only until sign-in is complete.
Sources and controls: Google-authenticated session identity, Supabase row-level storage, one-hour expiry timestamps, and local device locale checks for Canadian context. No permanent wall retention is intended beyond the rolling one-hour window.