Our great sponsors
-
SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
The first time I read the post I also assumed the phones are the beacons and was about to suggest the cat-localizer, but actually OP is asking for the phones doing the tracking.
Check out Room Assistant. I have 9 RaspberryPi Zeros set up around my house and these do a great job tracking which rooms our cats are in, provided that we put a tiny BLE dongle on their collar.
NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a more popular project.