ELI5: Explain Like I'm 5

Service number

A service number is like a special code that helps people identify you when you use a service. It's like a name, but instead of letters, it's made up of numbers.

Let's say you want to sign up for a new video game account. The game company might give you a service number to use as your username. This service number helps the company keep track of who you are and what things you've done while playing the game.

It's a bit like when you go to school and the teacher has a list of all the students in the class with their names and student numbers. The service number is like your student number. It helps the teacher keep track of who has handed in their homework and who needs help with a problem.

So, in short, a service number is a special code that helps people identify you and keep track of your activities when you use a particular service.