Wiktionary
at one's fingertips
prep.phr. (context idiomatic English) readily available.
Usage examples of "at one's fingertips".
When the whole of the future was at one's fingertips, one had to keep watch on the big picture.
To have at one's fingertips the ebb and flow of such wealth was a dream come true.
When one is young, he thought, how many choices lie at one's fingertips?