If a website is not registered and logged into the system, what are the methods to verify the identity of the user? How to solve it

If a website is not registered and logged into the system, what are the methods to verify the identity of the user?
Title. I beg your thoughts/opinions.

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HTTP Auth

1-2 hundred router set it?
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discuss

HTTP Auth

1-2 hundred router set it?

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ID Card, fingerprint ...

Not a lot, okay?
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can use Sessionstorage to do
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Call him in front of your computer.
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Have registration and login system
There is no user concept, everyone is the same, are visitors
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Verify user Identity?

What do you verify the user's identity?

No user system has the information can only record the visitor's IP statistics.

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Cookie+ip



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What identity, male or female? Since there is no user mechanism. Everyone is the same. are all visitors.

To verify is also to validate browser-based. IP, Access time ...., but it doesn't make sense. The same person can be visited in different places.
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How do you differentiate? The same person can be accessed from different places and can be accessed by different users on the same computer.
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Is it the legendary GPRS satellite location??


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Speech recognition, facial recognition
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The house is unlocked, and if it can be identified?
With the most Earth, the code!
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One device per person, brush a second-generation ID card when using
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MAC bindings? IP bindings? But both of these seem to be easily imitated.
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Sign-in is the cheapest and easiest way to do this, and other identity certifications include bioengineering, such as face recognition, fingerprint recognition, and retinal recognition. Digital signatures, digital certificates, etc.
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In this case simply use the account password. discuss
Email verification, similar to mobile phone recharge code.
When the user submits the content, fills in an email address, only then through this email can activate enters the next step.

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...... Study hard.
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Explore
In this case simply use the account password. Reference:
Email verification, similar to mobile phone recharge code.
When the user submits the content, fills in an email address, only then through this email can activate enters the next step.

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Invading the user's brain

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