I just completed a #JavaScript application for #KaiOS feature phones that periodically reports the position. I was quite surprised I couldn't find anything ready made for my senior user, but it wasn't too difficult to make either.

Live location is very sensitive data, but #selfhosting the server with TLS and basic authentication gives me more privacy than the big tech cloud. And it only needed reading a bit of MDN and making a basic #Docker image based on #NodeJS