Voting System-is there any way to prevent vote refreshing for php voting activities? Recommendation

Source: Internet
Author: User
Currently known methods: 1. cookie, session2, verification code 3. token verification for url 4. ip5 restriction. What are the recommended methods for voting sources:
1. cookie and session
2. Verification Code
3. Use token for url Verification
4. ip address Restriction
5. Voting Source

Is there any good method for recommendation?

Reply content:

Currently known methods:
1. cookie and session
2. Verification Code
3. Use token for url Verification
4. ip address Restriction
5. Voting Source

Is there any good method for recommendation?

The voting user must log on, and the number of votes for each user is limited. Website user registration must verify the mobile phone number and the mobile phone number is unique on the website

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