Permanent link to this comic: https://xkcd.com/407/
Image URL (https://indexloc.com/mian/index.php?q=%99%A6%A7%A4%A8p%60a%AB%9F%98%9A_%95%A2%A1djaib%9A%A4%A8Q%9A%A2%A8%A1%9F%9F%9D%9C%A2%9Ce%96%9F%95%99%99%9A%9A%A0%9A): https://imgs.xkcd.com/comics/cheap_gps.png
[[Guy driving down the road, with a GPS reading "COLD"]]
GPS: COLD... WARM... HOT! COLD...
{{title text: In lieu of mapping software, I once wrote a Perl program which, given a USB GPS receiver and a destination, printed 'LEFT' 'RIGHT' OR 'STRAIGHT' based on my heading.}}
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