My general exam paper has been e-mailed to my committee, so, assuming I survive next Friday's oral exam, I will be officially ABD and have the right to a key to the math library.
We get a normal key to the building. The magical keycard leads to the department's well-stocked "reading room." (There's also a "math/physics library" that's open on the weekend, but that nobody gets keys to.) The magical keycard unlocks the door when you hold it up to a magical square on the wall. The magic is powerful enough that I can keep my card in my wallet in my pocket, and open the door by holding my hip near the magical square.
Further investigation (http://en.wikipedia.org/wiki/Proximity_card) reveals that my card is probably nothing more than an integrated circuit that transmits a binary code to the receiver when an attached inductor-capacitor circuit is excited by an electromagnetic field from the receiver. Of course, any sufficiently advanced technology is indistinguishable from magic in the absence of Wikipedia.
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