A nice thing about MA (there are a few) is that the law states that the max fine on a bike is $20 and "the violation shall not affect the status of the bicyclist’s license to operate a motor vehicle nor shall it affect the bicyclist’s status in the safe driver insurance plan." i.e. no points are issued, among other things. A rider who refuses to give or gives false ID gets a fine over $20 but less than $50.