For what it’s worth, the max polling rate for low-speed USB devices (of which mice almost invariably are) is, IIRC, 100 Hz. I would worry less about stair step

For what it’s worth, the max polling rate for low-speed USB devices (of which mice almost invariably are) is, IIRC, 100 Hz. I would worry less about stair stepping and more about making the speed and acceleration distributions and auto-correlation look natural: a real human-powered mouse won’t be constantly moving (you have to stop the think about the next step, use the keyboard, etc) and when it is moving will tend to follow a rapid move-pause-move pattern. Another telltale would be a mouse that moves naturally but never clicks. Vendor and device ID are the lowest hanging fruit, but I think there are a lot of other giveaways that a mouse jiggler is being used.