at one's fingertips

at one's fingertips  {adv. phr.}
1. Within easy reach; quickly touched; nearby.
Seated in the cockpit, the pilot of a plane has many controls at his fingertips.
2. Readily usable as knowledge or skill; familiar.
He had several languages at his fingertips.
He had the whole design of the machine at his fingertips.
Categories: {adv. phr.}

'at one's fingertips' on video