This is from a poster at madison.com:
Ben Masel said on: September 22, 2010, 6:47 am
@bones1954:
while police may REQUEST ID at any time, they may DEMAND that one identify oneself only when they have “reasonable articulable suspicion” of a particular crime. See Hiibel v Nevada, Brown v Texas, and Kolender v Lawson, Supreme Court cases.
Even then, it’s not required to carry a physical ID except when driving, boarding a plane, etc
More good insight.
Like many have noted — this is a good issue to follow. *IF* you are behaving yourself, and there is no probable cause (e.g. as defined in your reference) then perhaps you are NOT REQUIRED to produce government-issued ID.
Thanks for posting that.
I hope this issue gets cleared up not just for WI but for all relevant states and locales.