After the information is embedded in the image, the resulting data is output as a PNG file, with alpha channel information used to carry the data.

在图片中嵌入信息后，得到的数据可以输出为一个PNG文件，使用alpha通道信息来携带数据。

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Google also mentioned they work on adding alpha channel support, more speed improvements and a complete metadata specification.

Google提及他们正在着手增加Alpha通道支持，进一步提升速度，以及加入完整的元数据规范。

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“And then here at the end, here’s me saying, ‘Oh, and here’s a new user interface. It’s translucent, there’s real-time animation, and a full alpha channel, ’” Ratzlaff recalled.

最后轮到我发言了，‘现在我们来看看新的用户界面，它是半透明的，有实时动画和一个完整的alpha通道’“Ratzlaff回忆道，”但现场只有笑声，因为根本不肯能再去重做用户界面。

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