Gadget Componet Name?

[+ElmsFam]

I'm trying to build a gadget that I have seen done many times, but can not figure out what the compnet I need would be called. The type of gadget  am tring to buld is:

 

The cacher puts several betteries into the cache (The power might be selfcontained though).

Then, they check their phone wifi networks and a geocaching wifi network shows up. When they click on the network it takes them to a page with the code to the cache on it. I think these caches don't autually give any wifi though. Does anyone know how I would go about building something like this, and what the compnet I would need would be called?

 

Thanks for any ideas!

[+arisoft]

The gadget is called an access point. Here is one component you may use.

 

https://www.open-electronics.org/diy-your-open-source-access-point/

 

By using this kind of open source component you can modify the access point to do everything you need.

Edited May 5, 2021 by arisoft