Information Processing Society of Japan (IPSJ) is what they claim the largest academic organization related to Informatics in Japan. I've been a member of it since 2009 when I was a 4th year undergrad student, I've participated in many domestic workshops and events they host, and I've received a few awards from them.
One thing I was concerned about them, is that they require to register one's sex (choosing either from man or woman) along with one's name and afflication and other information when someone joins IPSJ.
Because I wanted to choose a third option "prefer not to answer" (which I believe must be choosable) due to two reasons below, I asked them to add it to the sex column of the registration form.
- Reason 1: I cannot imagine a single reason to require registering one's sex to receive their membership service.
- Reason 2: Registering your sex is not only like you declare you have a particular gene, but it makes people see you with largely stereotyped ways.
I actually didn't expect a positive answer, because as an IT person I know that modifying even a single bit of an enterprise system costs tremendous amount of money and time (like 100s of 1000s of dollars, literally).
Turned out, my expectation was wrong in a good way. Their response was that they deleted my sex information from their membership DB and they also said that they would conisider adding a new option ("prefer not to answer") in the future. It was very nice of them to have (halfway) accepted my request, and I belive they will do the right thing in near future.
Figure: a screenshot of my membership info in their portal. The sex ("性別") column is blank.