WeChat scan QR code can you get the unique identifier of the phone?

Scan QR code can you get a unique identifier for your phone?
Scan two-dimensional code, you can get the unique identifier of the phone, any symbol can be, as long as the only one good
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The QR code only gets two of the plaintext.
But after the scan is done by the app, such as by sliding to the ABC string, the app will automatically send the device_id to a specified URL. You can get to the simple scan of the QR code is nothing, because the two-dimensional code is to write dead content, who go to scan all the same, the difference is the scan after the deal.

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