How does TavKey work?
TavKey shows a private signal that only your trusted family phones can see. When someone calls and you are not sure it is really them, ask them what TavKey shows right now.
Do I need to be together to add someone?
Yes. To add a trusted phone, you and the other person need to be together in person. Being together helps you make sure you're adding the right person, prevents mistakes, and keeps your family circle private. Plus, visiting your parents or grandparents once in a while is usually a good idea anyway.
What does the signal look like?
The signal is a simple combination, such as a color, image, or number. It changes regularly, and all trusted family phones show the same signal at the same time.
When should I use it?
Use TavKey when a call feels suspicious, urgent, or unusual - especially if someone asks for money, passwords, login codes, or personal information.
Is my family data private?
Yes. TavKey is designed to store as little information as possible. Your private family signal is shared only with trusted phones you explicitly add.
Do I need internet to check the TavKey?
No. Once your phone has joined the family, it can show the current TavKey using the private setup secret and your device clock.
How do I add a trusted phone?
Add a trusted phone while you are together. TavKey guides both phones through a short verification step so you know you are adding the right device.
Can TavKey guarantee a call is safe?
No app can guarantee that. TavKey helps you check whether the caller has access to your family's private signal. If you are still unsure, hang up and call back using a number you already trust.
TavKey