Who can explain importance of user agent?

Who can explain importance of user agent?
I need to get use out of cardholder user-agent

i would have explained it but this thread is way too old and op probably doesn't visit this forum anymore. if anyone else is interested in knowing let me know

Sanırım bunun cevabını bende arıyorum.

Kesinlikle çok eski.

interessing

What are you guys talking about

Hi I'm new here can any one help me out

Im interested in learning as much as possible

user agent is a software (a software agent) acting on behalf of a user, such as a web browser that "retrieves, renders and facilitates end-user interaction with Web content