Toby Allen

An anonymous session's cookie and its metadata are both set once, at the moment the session is created, and neither one changes again for the rest of that session's life. That single fact reshapes how you have to track state across the handoff into a known identity.

The delegated-access series treated the authenticated login as the whole security principal. It isn't quite. The same real person routinely holds more than one login, and an authorisation model that can't tell them apart ends up merging blast radii it shouldn't.

This blog's cross-posting to Bluesky, Mastodon, and LinkedIn used to only fire as a side effect of a successful Vercel deploy, which meant a social post could never exist without a brand new article behind it. I pulled the two apart into an independent queue, and found neither LinkedIn nor Bluesky actually auto-fetch a link's image the way the compose box makes you assume.

Auth0 published a guide for running a confidential client on Cloudflare Workers with @auth0/auth0-hono. I built the guide's example for real and hit three things it doesn't mention — a middleware default that locks down every route, an undocumented Node API dependency, and a session model that changes what revoking a session actually means.

Auth0's Device Authorization Grant lets a CLI tool or smart TV authenticate a user without a browser of its own. Getting it working meant hitting an undocumented requirement — the client has to be a native, OIDC-conformant public client, not the confidential regular_web type used everywhere else in Auth0.