fingertips
n. plural-onlyn. the very ends of your fingers. You often use this word to describe having information or tools ready to use immediately.
n. the extreme ends of the fingers. Frequently used in a figurative sense to indicate immediate availability or accessibility of resources.
She has all the facts at her fingertips.
With a smartphone in your pocket, the entire history of human knowledge is at your fingertips.
The new software interface was designed to ensure that the most critical diagnostic tools were always at the surgeon's fingertips during complex procedures.
Almost always used in the plural form; frequently appears in the idiomatic phrase 'at one's fingertips'.
I have the information at my fingertipI have the information at my fingertipsThe idiom 'at one's fingertips' always uses the plural form to indicate readiness.