I had one of those. I learned how to bypass it by turning on the car, but not the engine, unplugging it, then plugging it back in and it let the engine start without blowing it in it then. Of course I was a moron so was still drinking and driving sometimes even then. Really stupid. Lucky and thankful I didn't kill anyone.
Actually got in my first, and only, car accident that I caused because it went off making a beeping sound for when you are supposed to re-blow like 20 minutes later and I looked down right as traffic came to a screeching halt in front of me and I smashed into the back of a SUV. The impact shot the speakers in the dashboard into the backseat and the passenger side airbag exploded when it deployed and the stuff in it more or less maced me in the face and I fell out of the car blind while it was still slowly rolling to a stop along the side of the road. Fun times.