global is to the world. check read and write speed. failure is not a way to measure genuiness. + if said read/write speeds are not there, yours is probably FAKE
bullshit. just goto sanddisk website. open a live chat and send pictures of your card with the serial number visible on the top. They will comfirm. thats how you do it. let me know your results. I have even registered all of my cards :yes: