So I have an idea for a product, but I'm not sure how to go about doing it. I won't say exactly what the product is (no offense), but basically I would need a watch/sensor to activate a timer when passing by a pole. What would happen is a person would wear this watch (with sensor inside it), or some type of arm band with a sensor inside it, and as they passed this pole (which would also have a sensor on it), a timer would start. I'm guessing it would have to be a laser sensor as well (maybe that's the only type of sensor there is, I dont even know). Anyway, I'm sure the technology for this exists, I just need a little help in which direction to go. I really appreciate any advice. Thanks.