This could be a very stupid question, but do I need to do a factory reset on a used tablet for safety reasons? It looks like the seller cleaned off everything personal he had on there and he claimed he barely used it the two weeks he owned it. But I don't know the guy and am very new to the tablet world. Is there any possible way he could obtain personal information such as passwords as I'm using it? Not to sound paranoid, but I'm constantly amazed at what all technology is capable of ....good and evil!