My pal Sean Ragan got a Seek thermal imaging camera add-on for his phone. He was excited to try it out, but the micro-USB jack on his phone is "upside-down," which means the camera faces the same way as the phone's screen.

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http://feeds.boingboing.net/~r/boingboing/iBag/~3/r0ua-CaowCc/a-hard-fought-lesson-about-usb.html