A Shop Sets Seven Cookies Before Anyone Answers Its Cookie Banner

Sat, 24 Oct 2026 00:00:00 +0000

A cookie banner asks “Can we use cookies?” and most people assume nothing happens until they answer. This case study runs on a made-up outdoor shop, Peak Outfitters, built the way plenty of real shops are: the banner is there, and so are the cookies.

The strip above every stranger counts the cookies in its store. A stranger starts with none, so the count is exactly what the site handed over since the page opened.

Seeing Both Sides of a Checkout AB Test at Once

Sat, 24 Oct 2026 00:00:00 +0000

A site owner runs a test. Half the visitors get the old checkout, half get a new one with a lower price and a different button. Then someone asks what version B actually looks like on the live site, and nobody on the team can show them, because their browsers were sorted into A weeks ago and the cookie keeps them there.

The usual fixes are a private window, then another, or clearing cookies over and over until the coin lands the other way. Each new try forgets the one before, so you never see the two side by side.

Site Owners on unweb.org

A Shop Sets Seven Cookies Before Anyone Answers Its Cookie Banner

Seeing Both Sides of a Checkout AB Test at Once