Is it possible to use spotify on a public computer?

Like the computers in the uni library, I see some people on spotify, but I don't know how they access it when the computers don't have spotify installed on them. I would appreciate the advice, thanks.

What is a VPN?

VPN is (Virtual Private Network) were first used by companies to enable their employees to securely access internal systems such as email remotely (e.g. from home or while on business trips). Today they are increasingly being used for personal use by individuals to protect their privacy while online in public places (e.g. when using the wi-fi connection in a cafe) or in a country where the internet is censored / blocked (e.g. China, Saudi Arabia��).