This post was a while back, but I juts now have gotten to it. A fellow PhD student, in an attempt to help us brainstorm more creative ways to recruit new information science students, sent us the following advertisement for reference:

As he explained, it’s a puzzle meant to draw you in:
In this poster, everything is hidden in the binary code (please ignore the girl at the background).
The decipher process can be found at http://xrl.us/bnx5jc (in Chinese). Here are the steps to get the material in natural language (I skip some trial and reasoning steps):

1. OCR the binary code from the image.
2. Save it as a binary file and name it bin.gz (you can get the name of the file by interpreting the binary code).
3. Unzip the file and get a file called bin. This is a java class (again, tell from the binary code).
4. Save the file as a java class and run it. You can get the correct name of the class (i.class) from the java error message.
5. Run the class again and finally you will get an url: www.i.u-tokyo.ac.jp/fun/hikari-loveletter

What puzzles me about it is not actually the number cipher, which I imagine is pretty neato, but the the relevance of the woman in the background. Is she supposed to be just a pretty background, like a flower pattern? Are they assuming only heterosexual men apply and that this woman will get their attention? Is this like insurance companies that put naked ladies on billboards, but a subdued version? I’m not yet ready to label it sexist, simply because I don’t understand Japanese culture enough to comprehend the context. Right now I can’t help but see it as comically non-sequitur!