← cd ../
$ Notes
Short write-ups on things I built: the problem, the approach and the trade-offs.
// 2026-10-09
Passwordless login with passkeys and emailed codes on Cloudflare Pages
How the Denia Print dashboard signs a team in with passkeys or a code by email, on Cloudflare Pages Functions and Workers KV, without a single password.
read --note → // 2026-10-09
A print shop price calculator with a live delivery date, without a backend request
How the calculators on Denia Print show a price and a delivery date with a countdown, computed in the browser from data that is already on the page, and how the server checks every price again.
read --note → // 2026-10-09
Multi-tenant care software on Supabase: Row Level Security, encrypted citizen numbers and an access log
How Zorg Intelligence keeps care organisations apart in one Postgres database, stores Dutch citizen service numbers encrypted and records who opened which client record.
read --note →