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POHow to detect in Android whether UID from NFC tag is random?
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9797030
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2012-03-21T00:33:23.507
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2018-05-25T08:29:20.503
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2018-05-25T08:29:20.503
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1
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text
Body
I am working on an Android project which relies on the unique UID of a discovered NFC tag to process the tag. I extract this UID using the following code: <pre><code>byte[] extraID = intent.getByteArrayExtra(NfcAdapter.EXTRA_ID); </code></pre> However, for some technologies this UID is randomly generated for security purposes. Does anybody have an idea how I could detect that this is a randomly generated UID? Is there some kind of flag that is set? note: a simple solution would be to read the tag twice and compare the UIDs. However, I would like to avoid this.
Tags
<android><nfc><uniqueidentifier>
Title
How to detect in Android whether UID from NFC tag is random?
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