What it is: Someone shows you the palm of their hand with their thumb conspicuously tucked across it, then closes their fingers around their thumb, in a video call or in real life.

Why YSK: If a person uses the signal for help, they are telling you that they need help, and they can’t directly ask for it. Do not acknowledge the signal. When you can, contact them in a way that you’re less likely to be overheard such as text or email, and try to find out what they need. Asking yes-no questions will further reduce the risk to them. A good first question would be “Are you in danger right now?” followed by “Do you need the emergency services?”