How can I receive the verification code?

To know where a person is, we need to start from different angles and actively or passively understand his information or the information disclosed by the other party as needed. There are several possible ways: 1. Through social networks or messaging applications: If you add their social network accounts or messaging applications, you can view their last login time and location information. 2. Contact by phone or text message: You can call the other party or send a text message to ask about their recent whereabouts, and you may get some useful information. 3. Positioning through surveillance video or mobile phone: If the other party's mobile phone has the positioning function turned on, you can track their position through mobile phone positioning. In addition, if you want to know whether the other party is in a certain place, you can check whether there are surveillance videos in the place. It should be noted that in order to avoid infringing on the privacy of others, the above methods should be used with caution, and should follow the principle of legal and reasonable concealment and respect the privacy of others.