问HN：一个类似LinkedIn的平台，但仅限于你实际见过面的人？
我不断收到请求，希望我能为我的LinkedIn连接中的人介绍，但我实际上并不认识他们。
我在考虑开发一个应用程序，能够生成一个独特的二维码，但扫描二维码的人必须在同一地点。可能还需要一起拍张自拍。让这个过程稍微复杂一些似乎会增加额外的价值。这意味着你们真的应该进行良好的对话，并希望保持联系，这样双方的连接会更具独特性。
通过这种方式建立网络，你可以保证在这个网络中的所有联系人实际上都认识你所见过的人，或者至少见过他们一次。
我是否遗漏了什么明显的事情？有没有技术上的困难？你如何破解这个系统以进行验证？
谢谢！
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I keep getting requests for an intro with people who are my LinkedIn connections, but I don't actually know them.<p>I'm thinking of an app that would generate a unique QR code, but the person scanning has to be in the same location. May also need to take a selfie together. There seems to be additional value in making it a little more complicated. This means you really should have a good conversation with each other and want to stay connected, so both have a more exclusive connection.<p>You build a network like that -- you have a guarantee that all the contacts of someone you have met that are in this network actually know them, or at least met them once.<p>Am I missing any obvious things? Any technical difficulties? How could you hack this system for verification?<p>Thanks!