How can you know if someone is using WhatsApp web?

If someone is using WhatsApp Web, you may be able to see it in their WhatsApp account settings. Here's how:

1. Open WhatsApp on your phone.
2. Tap on the three dots in the top right corner of the screen.
3. Tap on "WhatsApp Web."
4. If someone is using WhatsApp Web, you will see a list of active sessions.

Keep in mind that if the person has logged out of WhatsApp Web, you will not be able to see their active sessions. Additionally, if the person is using a third-party app to hide their WhatsApp Web activity, you may not be able to see their active sessions even if they are using WhatsApp Web.

It's important to note that using WhatsApp Web is not necessarily a sign of suspicious or inappropriate behavior. Many people use WhatsApp Web to stay connected on their computers or tablets. However, if you have concerns or questions about someone's WhatsApp activity, it's best to communicate openly and honestly with them or seek advice from a trusted friend or family member.