I have been saving lots of important and private data on my sd card (on my macbook pro), today I decided to buy a new sd card with a bigger capacity. I want to throw away my old sd card. So i decided to destroy the sd card physically. I take a hammer and destroy the card. The sd card is become 4 pieces now. My question is, can somebody recover some part of the data in those 4 pieces? or once it is broken the data is impossible to be recovered even a few part of the data? just my personal curiosity.