The most reliable way to get an invite is to contribute to the project. If you have a significant amount of wireless data (handshakes or logs) that hasn't been uploaded yet, reaching out to the developers or active moderators on forums like Antichat can often result in a code.
Be extremely cautious of websites or YouTube videos claiming to have a "3WiFi invitation code generator" or a "hidden link." 3wifi invitation code link
Here is everything you need to know about how the invitation system works and how you can realistically gain access. What is 3WiFi? The most reliable way to get an invite
3WiFi has deep roots in the security community. Monitoring threads on specialized forums is the traditional way users share invites. Keep an eye on "Giveaway" threads where long-standing members help newcomers. What is 3WiFi
If you manage to secure a link or code, use it immediately. These codes are often time-sensitive or have a limited number of uses. Once registered, make sure to:
We strongly advise against buying codes from third parties. These are often "burned" or invalid by the time you pay, and there is no buyer protection for such transactions. What to Do Once You Have a Code
The best way to ensure your account stays active is to contribute your own discovered networks to the database.