When the packing box needs opening, the impression is pressed by a thumb, and the box cover can be torn along an impression line.

当需要开启包装盒时，用大拇指按捺压痕处，盒盖即沿压痕线被撕开。

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"Each voter has a digitally verifiable photo on the voter list, and will affix his or her left thumb impression against his name before receiving the ballot, " Mr Malik said.

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