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by sqren 3175 days ago
Very well written article - and I love your drawings! I did a similar story a while back on how you can track your friends sleep patterns using Facebook Messenger [1]. I'm sure there are lots of other services that have this problem, and most users are blissfully unaware.

[1] https://medium.com/@sqrendk/how-you-can-use-facebook-to-trac...