When HN users recommended it
1 HN user recommended this in 2023, in one comment.
20072026
Each tall tick is one HN user's first recommendation. A short tick is the same user again. Click a tick to jump to the comment.
1 HN user recommended this in 2023, in one comment.
Each tall tick is one HN user's first recommendation. A short tick is the same user again. Click a tick to jump to the comment.
It doesn't exist (yet) but pair this https://www.amazon.com/Digi-1st-Counter-Digital-Mechanical/d... with a paper notification (behind plexi) and some green/red leds, and a raspberry pi and you could have a screen-less card reader.