Sometimes I hike alone. I use a Garmin InReach Mini 2 device, which is a satellite navigation tool that allows me to give access to friends so they can track me.
Note: this is only valid if I am actually out on a hike and I have tracking turned on.
Here is the link where you can see where I am:
On that page, there is a Message button which allows you to send me a text message. I can also respond to your message. Please note that this is for extremely important exchanges or emergencies only.