Diff ⇥ blog.nytlabs.com

Noah Feehan, of the New York Times’ Labs:

Diff is a small device that monitors the internal events stream of The New York Times and prints out a summary each time an active headline is changed. As it runs, it generates a long stream of changes printed on thermal paper: text that was removed from a headline is rendered as inverted, while additions to a headline are underlined.

As someone who has built weird stuff with receipt printers, this is fascinating to me.