That article is referring to the internal memory that the Polar H10 has, which can be used to store some data. But you will eventually need to connect the devic

That article is referring to the internal memory that the Polar H10 has, which can be used to store some data. But you will eventually need to connect the device to retrieve that data. You can access this data programatically with a blue-tooth-low-energy client like my application is doing (using python)