Overreaction of the week: a college in the US is pressuring students to use iris scans to get entry to college buildings, supposedly for their safety.

If you have any contact with students there, please ask them to "opt out". We must oppose all new "security" measures unless there is a specific strong local justification. School shootings in the US are a very small cause of death, so small that they don't justify contorting peoples lives in any matter at all.

I have opted out of the RFID-equipped ID cards that are the main method of getting into the MIT building where my office is.