Joke Collection Website - Blessing messages - How to prevent R&D personnel from cheating in lottery?
How to prevent R&D personnel from cheating in lottery?
1, plus graphic verification code. Adding graphic verification code lottery can prevent scripts from automatically drawing lottery in batches, put an end to the situation of machine lottery, and make a simple brush-proof restriction.
2. Limit the number and frequency of lottery for a single ip. For example, each ip can only draw 100 times, and each draw interval is 3s. At the same time, the browser caches the lottery records, and users who have already won the lottery cannot continue the lottery. If the ip reaches the lottery number, the lottery cannot be continued.
3. SMS verification code. Users need to enter the mobile phone number before the lottery, and the lottery can only be held after SMS verification, so the number of mobile phone number lottery is limited. Therefore, adding graphic verification code, iP restriction and SMS verification code can prevent R&D personnel from cheating in the lottery.
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