How do I evaluate latitude and longitude of Geolocation plugin?

Hi Devs,

I'm new to geolocation concepts and usage and I'm trying to find out how to evaluate latitude and longitude using Geolocation plugin.

So this is what I did.

On Start of Layout -> Watch location

On location update -> Evaluate if Latitude and longitude are equal to X and Y (X and Y are mi fixed values)

So the problem is the accuracy, I can't make latitude and longitude be the same number to know if I'm in the location requested, so my question is: What's is the proper way to evaluate location? If accuracy always varies how do I set a range of values to know if I'm within an area (like 50 metters around the actual position), what's the precision I should be using?

For example, If my location is at 30.23011 -100.23023, what range of numbers should I use to give it a tolerance range to find the location (+/-0.001)?

Thanks!