MIT students create and circulate open source, covert RFID rings to subvert campus tracking system

[FGD135]

@muser

system to recognize that a student can’t magically disappear from one place and reappear in a different place without time to get there

True, but what are the odds that the system is sophisticated enough to check this?
My money is on re-used code from a simple inventory system like for a library or something like that.