QQ stealth, how to know each other online?

method 1) first, there must be a skynet firewall and ensure that it has been started. Then send the text to the other party, and then check the history inside the firewall, which records the time of each transmission and the IP of the other party. Then both of them are really offline, because that is the IP of the server that temporarily stores the message. If they are different, then one of them must be invisible! You can try sending text to others again, and it will be easy to understand whether it is online in the end. Another way is to use software to determine the geographical location of the other party according to IP. If that geographical location is similar to his previous location, it is invisible!

(Method 2) Just right-click and select "Browse * * * to enjoy files", and then move the mouse to the friend's avatar later, and the friend's IP information will be displayed! There is also the problem of displaying invisibility. Now the main problem faced by the invisible version of QQ is that it can only be viewed before the other party goes online. In fact, it is not necessary to go online before the other party, so you can know whether the other party is invisible. In the same way, right-click the avatar of your friend who wants to see whether it is invisible, select "Browse * * * to enjoy files", and then move the mouse to the avatar of the friend later. If the other party is invisible, it can be displayed! (Note: the above skills require both parties to be in QQ25 version)

(Method 3) For the case that QQ friends are online but currently invisible, users can use the following convenient methods to verify: users can edit short messages in the format of "FS+ space+QQ number of the other party+short message content" with their mobile phones (for example, if we want to inquire whether friends with QQ number 12345 are online in stealth state, Then the content of the short message should be "FS 12345, please contact me quickly"), China mobile users can send it to 17, and Unicom users can send it to 9777. If the other party is really offline instead of invisible, users will receive a message on their mobile phones that reads "Mobile QQ: QQ users are not online!" And if the other party is online or invisible, the user will not receive any text messages. However, the user's mobile phone must be enabled with the service of "Mobile QQ" to use this function.

(Method 4) For users who have not opened the "Mobile QQ" service, you can also use the "QQ Web Presence" service launched by the new version of QQ to inquire whether the other party is invisible. The "QQ Web Presence" was originally a service to publish the online status of the user's QQ to a webpage, which means that any other user who visits a webpage can have a QQ conversation with the user by clicking a webpage button.

first, the user logs into QQ24 and opens the /webpresence/index.shtml webpage link. Then, he clicks the link of "Generate webpage with interactive status code" in the webpage. Next, he chooses any online status picture style, enters the QQ to be queried in the "QQ/TM number" box, and the following two items can be filled in at will. Click the buttons of "Generate webpage code" and "Preview effect" respectively. Click the QQ online status picture link in the subsequently opened "Interactive Status Web Page Effect" page, and QQ will automatically open a chat dialog box, where the user can input a piece of information at will and send it to the other party. If the other party is not online, QQ will immediately give the corresponding text prompt that the other party is not online, otherwise there will be no text prompt, indicating that the other party is currently in a stealth state.