The photocopier This makes copies, using a mirror, a roller and special black powder.

复印机用一面镜子，一个滚筒和专门的黑粉可以复印。

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What makes this project unique is that Smolan offers readers a chance to upload their own photographs and personalize their copies.

此书与众不同的是，斯莫兰向读者们提供了上传自己的照片、为书打上自己烙印的机会。

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This makes it hard to keep a lot of copies of this data in multiple places.

FORBES: Storing Information for a Thousand Years