My son in law lost his Kindle on an airplane trip. When he call Amazon, he was told he could stop someone's ability to download product in his name, but if the person called in with the serial number after he did stop the kindle in his name, that other person could give a serial number and start using it for his or herself. I think that this is awful. Why wouldn't Amazon tell the person that the kindle was lost or stolen and that they could not use it since they did not purchase it unless they had proof of purchase from the rightfull owner, and they shouldd return it to the person who lost it. I would suggest that all of you kindle owners be really carefull not to lose your product.