The Card Decline That Thought It Knew You
A fraud model froze Sinead's card at a petrol station in Donegal. She talks to a payments data scientist about what the system saw, and why a small purchase can look wrong.
Why Your Photos Know It Was a Beach Day
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Show notes
How a phone sorts a thousand photos
Sinead starts with the album her phone built without asking, titled Beach Days, and works backwards to find out how it knew. Her guest is Dr Niamh Scully, a computer vision researcher at University College Cork, who explains the whole chain in kitchen-table language.
- What a model actually sees when it looks at a grid of pixels
- Why the app recognises your dog but not your cousin's
- The on-device versus cloud question and what it means for your battery
- How to switch face grouping off if you would rather it did not happen
Next week: the bank text that says your card looks suspicious.
Transcript
Hello and welcome to Autocomplete Lives. I am Sinead Fallon, and this is the show about the artificial intelligence that has already moved into your ordinary day, usually without knocking. This week we start with something small and slightly uncanny. Last Sunday my phone showed me an album called Beach Days. I never made it. It had my sister's dog in it, a sandwich, a sunburnt foot, and somehow it was right about every single picture. So how did it know? I rang Dr Niamh Scully in Cork, who builds exactly this kind of system, and asked her to explain it as if I were a very curious ten year old. We will also talk about what stays on your phone, what goes to a server, and which switch to flip if you want it to stop. You are listening on Witspeak Podcasts. Let's get into it.
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