When HN users recommended it
1 HN user recommended this in 2012, 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 2012, 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.
Here's a REAL laser system, for less money:
http://www.amazon.com/LaserShield-BSK-0013101-Home-Security-...