In ohio, the only information that holds up in court is what the officer knew at the time of the arrest. If he arrested you without cause and then found out a bunch of shit afterwards, none of it can be used. I learned about this in a class we were forced to attend as part of joining a fraternity, a campus lawyer detailed all of it for us. You've all seen cops lie to people to get them to admit to things before, this is no different. They rely on the fact that a ridiculous percentage of americans have absolutely no idea what their rights are/what the police are allowed to do/request.
Keep in mind when reading the following story: I was as respectful and levelheaded as humanly possible throughout all of this. I've always found that being courteous to people can get you much farther than being a jackass.
I was in Chicago in december of two thousand five for a halo tournament. We were in a hotel, and the person sharing the room with me was twenty one, so there were empty beer bottles in the room. We were being kinda loud, laughing and what not, because we were playing Halo. The hotel security guard came to our door, and once he saw the beer bottles, he called the police. When they got there, they asked who had been drinking. The guy who was over twenty one said he had, and everyone else said they hadnt. The cops then asked everyone for IDs, and I told them my name, date of birth, and address, which is the only thing Im required to give in that situation by law. I also asked for a breathalizer test to prove that I wasnt drinking, and thats when they got angry. They slammed me into a wall and cuffed me, yelling some shit about how I was "Some sort of lawyer smart-ass punk kid." They walked me out through the hotel lobby where about a hundred halo people were congregating, threw me in the car, and took me down to the station. Once they got me there and chained me to a bench in a holding cell, they tried to scare the crap out of me by telling me they could keep me in there for three days without a phone call or anything. Once they finally figured out that I knew my rights, hadn't been drinking, and wasn't going to "succumb to fear," they wrote me a bullshit "local ordinance violation" and took seventy five bucks in cash from my wallet. My court date was set for a few weeks later, when I would be back in ohio. I called about a week prior to my court date and asked the guy what would happen if I didnt show up. He told me that not showing up would be an admittance of guilt, that it wouldnt even go on any records outside of Rosemont, and that all they would do is keep my seventy five dollars.
If you're completely okay with this story and see no reason why people shouldnt do whatever police officers tell them, you're completely out of your fucking mind.