These are our fingertips. So, what does it mean to have something at our fingertips? The only thing I see are my fingerprints.
At Your Fingertips 唾手可及,近在手边
Dan: Can you call my phone? I can't find it.
Anna: Again? You are always losing your phone, Dan.
Dan: Do you know what? Forget it. I think I left it at home.
Anna: I could never leave the house without my phone. With it, the world's is at my fingertips.
Dan: Maybe I don't want the world to be that close.
If something is at your fingertips, it is very easy to get and use, as if it is in our hands. We usually use this expression when talking about information or resources.