User interface, - having a touchscreen that is set up for visual output and for capturing touch inputs, - having an audio unit, and - having a processor or multiple processors (10, 11) that are programmed - to present an arrangement of virtual keys on the touchscreen, precisely one of which is selected at any time, and - to actuate the audio unit to audibly output a label or function of each of the virtual keys as soon as said virtual key is selected, wherein the processor or the processors (10, 11) are programmed - to process a touch input on the touchscreen that can be performed as a swipe gesture in any region on a touch-sensitive surface of the touchscreen, and - to select a virtual key that is arranged next to the previously selected virtual key in the direction of the swipe gesture, - wherein the swipe gestures are horizontal and vertical swipe gestures, or horizontal, vertical and diagonal swipe gestures, and - wherein the virtual keys are arranged in a rectangular grid, so that horizontal, vertical or diagonal neighbors of the selected virtual key are explicitly determined, wherein the processor or the processors (10, 11) are furthermore programmed - to detect a one-finger tap gesture that can be performed in any region on the touch-sensitive surface of the touchscreen, - to replace a character that is assigned to the virtual key selected at the time of the one-finger tap gesture with a character that succeeds the character in a sequence of characters, characterized in that the processor or the processors (10, 11) are programmed - to detect a two-finger tap gesture that can be performed in any region on the touch-sensitive surface of the touchscreen, and - to capture the character that is assigned to the selected virtual key at the time of the two-finger tap gesture. - having a touchscreen that is set up for visual output and for capturing touch inputs, - having an audio unit, and - having a processor or multiple processors (10, 11) that are programmed - to present an arrangement of virtual keys on the touchscreen, precisely one of which is selected at any time, and - to actuate the audio unit to audibly output a label or function of each of the virtual keys as soon as said virtual key is selected, wherein the processor or the processors (10, 11) are programmed - to process a touch input on the touchscreen that can be performed as a swipe gesture in any region on a touch-sensitive surface of the touchscreen, and - to select a virtual key that is arranged next to the previously selected virtual key in the direction of the swipe gesture, - wherein the swipe gestures are horizontal and vertical swipe gestures, or horizontal, vertical and diagonal swipe gestures, and - wherein the virtual keys are arranged in a rectangular grid, so that horizontal, vertical or diagonal neighbors of the selected virtual key are explicitly determined, wherein the processor or the processors (10, 11) are furthermore programmed - to detect a one-finger tap gesture that can be performed in any region on the touch-sensitive surface of the touchscreen, - to replace a character that is assigned to the virtual key selected at the time of the one-finger tap gesture with a character that succeeds the character in a sequence of characters, characterized in that the processor or the processors (10, 11) are programmed - to detect a two-finger tap gesture that can be performed in any region on the touch-sensitive surface of the touchscreen, and - to capture the character that is assigned to the selected virtual key at the time of the two-finger tap gesture.