I've been in contact with the seller for over a year. I was wondering if I needed this device or not.I am grateful for the tolerant attitude and always polite answers, my patience would not be enough for such conversations. I know what a meticulous person I am. And so a couple of weeks ago I received my device, to say that I experienced some joy is to say nothing. After the first use and the first cache out, I realized that my life would not be the same. This is a new level in carding, it's not stealing cards at the bar like I used to do. This device allows you to store a lot of information and is much safer to use than what I used to do.