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Michael

@donohoe.dev
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Engineering & Product. I build media things for Journalism. Brooklyn, NYC. Personal views. donohoe.dev

Michael Donohoe
Michael DonohoeOct 10, 2026
On the workbench
Ask a developer how many side projects they have and you’ll get a number. Ask how many are finished and you’ll get a smaller one. Mine is smaller still. Some of these started with a problem at work. Some started because I wanted something to behave a particular way and nothing did. A few exist
ExperimentsPrototyping
Michael Donohoe
Michael DonohoeSep 16, 2026
Hacking the Tesco Clubcard for Fun and Profit
Not really. There’s no profit here, and no hacking. A small and boring Apple Wallet workaround for Tesco’s App Store region problem. My daughter left the US to study at Trinity in Dublin for the next four years. One of the slightly ridiculous problems she ran into was the Tesco Clubcard. Tecos is a large
Apple WalletiPhone
Michael Donohoe
Michael DonohoeAug 6, 2026
Sudoku on the Q Train
I don’t want world peace or a stable functioning democracy. I want offline mode for a sudoku game. Starting with too much context upfront is always a warning sign so prepare for a whole host of warnings. I regularly enjoy games and puzzles on the NYT Games iOS app. Our family depends on it as
OfflineSudoku
Michael Donohoe
Michael DonohoeJul 1, 2026
Date Formats and Other Religious Wars
You can usually identify a programmer at a party by asking for their opinion on date formats. Before long someone is arguing for ISO-8601, someone else is defending locale-specific formats, and another is explaining why Unix timestamps are the purest representation of time. Typical elitist New Yorkers. They’re all missing the point. Most dates are
DatesHCI