An approach for modifying a size of a key on a keyboard displayed on a touch screen is presented. Based on a fingertip of a user being aligned with the key at a first proximity, the key is enlarged, key(s) originally on a periphery of the keyboard are moved, and the key(s) are removed from view on the touch screen. After enlarging the size of the key, keys other than the key(s) retain their sizes, each of the keys whose size is retained is moved towards a corresponding edge of the touch screen. After the key(s) originally on the periphery are removed, the keyboard is displayed to include the moved, originally-sized keys and the enlarged key and not include the removed key(s), and cover a surface area equal to an original surface area of the keyboard.