Cache busting token with simpleads?

Hello, my client has a client who asks for some questions in relation with the ads in our webpage. They are asking for a Cache Busting token. I have been searching and as I understand it is a piece of code that makes that, when the user-browser has cache enabled, it finds the way of not caching the ads.
Is it implemented in Simpleads module? If it is, where can I find it? If it is not, is there a way to implement it?
If I am wrong with what I said, please tell me, thanks