Long time readers will be familiar with my obsession with public transport, specifically the London Underground.
Gizmodo's analysis of Tube wifi tracking data is fascinating - including some of the truly insane paths people have taken between between King's Cross and Waterloo
This was posted on Monday 11th December, 2017 at 3:33 pm Pacific.
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This is the personal website of Cal Henderson, Slack co-founder & CTO.
I give occasional talks, write code and sometimes articles.
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