What distance range are you looking for?
Geopresence usually includes GPS Information, and typically has a region size of at least 500 feet.
Some devices allow for a “near” range of about 50 feet.
And the term “proximity switch“ is normally used for triggers that are within about a meter of the device, so that they are substituting for a regular manual switch.
Any of these options are possible with smartthings, but require different devices and different automations to achieve.
So there’s a big difference between “the lights come on when I get home“ and “the table lamp comes on when I enter the living room.“
The FAQ might be of help: