User ID
Every user who visits Multiplayer Piano is assigned a user ID, or a string of 24 hexadecimal characters which appears when one clicks on a user's name not one's own and views right underneath their name, like so:
IP addresses
[edit | edit source]The user ID associated with a specific user may be changed if the user changes their IP address. This will also cause the user's color to change.
Whether a user's IP address can be derived or is derivative from the user ID, or instead is simply randomly generated upon accessing the site - is unknown.