at (one's) fingertips
1. Physically within one's reach or in one's hand. I always keep a glass of water at my fingertips when I sleep, because I hate waking up thirsty.
2. Easily or conveniently accessed, accomplished, or achieved With our new 24-hour phone service, you have quality customer care at your fingertips. Because the Internet is so easy to access these days, we have every resource imaginable at our fingertips!