That's the vision of a hotel chain that plans to send digital keys to guests' phones via an app instead of making them check in and get the traditional plastic swipe cards.

2015年12月四级真题（第二套）听力 Section A

It turns out that the less skilled pianist spends more time looking at her fingers than does the expert who, in contrast, is more likely to be looking at the sheet music, or looking ahead at keys he's not yet playing.

2019年6月六级真题（第一套）听力 Section C

They have to give so much thought and attention to the low-level mechanics of handling the ball, or fingering the keys or reading the music, that they are unable to give any thought to the thing that matters—the game, or the music, respectively.

2019年6月六级真题（第一套）听力 Section C

Steve moved to the piano and sat at the bench, hands trembling as he gently placed his fingers on the keys.

2019年高考英语江苏卷 阅读理解 阅读D 原文

We suddenly can't remember where we put the keys just a moment ago, or an old acquaintance's name, or the name of an old band we used to love.

2014年考研真题（英语一）完形填空 Section Ⅰ