The codes will match if the image is authentic but will be inconsistent if tampering occurred.

若编码一致则图像是原始的，反之，则发生了伪造的行为。

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If the image has been altered, the codes will not match, revealing the doctoring.

如果图像曾被改动过，两个编码会不匹配，说明存在编辑造假的行为。

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Image and bar-code scanning does appear to benefit from decent lighting and images and bar codes not being held at off angles.

图片及条形码扫描技术在扫描进行时，需要足够的光线。

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The stores are actually posters on bus-stops with QR codes on each image of a DVD or Blu-Ray.

BBC: Retail gimmicks or the future of shopping?

You can open and close the box and move it around, and the graphics match up extremely well -- the cameras only need to catch a couple of codes to generate the image.

ENGADGET: Canon MREAL Mixed Reality headset hands-on (video)