One of the cool things about the Particle Core is that you can implement something called cloud functions. The cloud part of course refers to data and services stored on the Internet, and with the Core boards you can include functions in your code that can be accessed by anyone with your device ID and token. Don't be alarmed to think anyone could hack into your board and take control; in order to do so, they would need your device ID and access token, which is a fairly long number and is impossible to guess.

This is not the same as the name you gave your board, which you can change. This name is just a reference name, which makes it easier for us humans to tell it apart from other boards. Your particular Core board has a unique identifier ID, which is hard-coded and cannot be changed. You can find your ID using the web IDE. If you press on the devices button (the one that looks like a crosshair), and press on the dropdown next to the name of your board, the ID will appear as...