As a frequent world traveller, I am a user of a system called IRIS. IRIS is retina scanning system and once you have signed up to it and been validated by a scan of your retina, you can walk through an IRIS scanner and avoid the queue for immigration.

It’s a bit clunky but it works… So, I was intrigued when I saw a post from Toby Stevens titled “My eyes have expired” (read post here).
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