Is there a word for being able to type without looking?

There are two possible candidates for your blank:

Because Bob is touch-typing, he can watch the lecturer and type simultaneously.

and

Because Bob is a touch-typist, he can watch the lecturer and type simultaneously.

I would fill your blank with "a touch typist." However, if your writing is meant to be more colloquial, you might say "Because Bob types by touch."

The German expression is "blind schreiben" ( to type blind/blindly) meaning someone can type without looking at the keys. I just have to look whether this expression is also used in English or whether there is another expression.

Added: No, the English expression is to touch-type. I like the German metaphor. Actually I find the English expression a bit curious as you can't type without touching the keys.