Learn Spanish (Spain): ¿Tienes el carné?

In Spanish, the ending of the verb tells us who is doing the action. Tienes specifically means you have (for informal situations). Because the verb already includes you, adding the word tú is unnecessary unless you want to add special emphasis.

The translation says your ID card, but doesn't el just mean the?

Yes, el means the. In English, we usually say your ID card, but Spanish speakers often use the definite article (el) instead of a possessive word (like tu) when it is completely obvious from the context whose card is being talked about.

What exactly does carné refer to?

In Spain, a carné is a general word for an official card or permit. Depending on the situation, it usually means your national ID card (carné de identidad) or your driver's license (carné de conducir).

I have seen this word spelled as carnet. Is carné a different word?

They are the exact same word. It was originally borrowed from French, so carnet is the original French spelling. However, carné is the official Spanish spelling that matches how it is actually pronounced. You will see both spellings used in Spain.