Specifically, I'm looking into the Amano brand for a little project. My primary goal is to trip the gate to open so I can gain access with my car. After watching this video, I became inspired to learn even more. Initial tests with a soda can on the exit gate were unsuccessful. I found the specific model of the gate I'm trying to hack, and even managed to get my hands on a manual (attached to this post). I'm not too versed in smaller electronics, but it seems like a couple dip switches inside the control box can open the gate. Unfortunately, this requires removing a plate, which is time-consuming, conspicuous, and generally not as cool as it could be.
Does anyone have experience with this? To me, it seems like the best course of action would be to find a way to trigger the loop on the exit gate and go in the out-way. I postulate that this is probably tripped by some sort of 'metal signature' of a vehicle, or possibly weight. Is there a way to make something small and handheld seem like it's a vehicle...thereby triggering the gate to open? Electromagnet? Am I way far off on this one?