In this era where various screen sizes and sizes need to be considered, it has become common sense to focus on small screens. Our design and interaction subject must be able to function properly on the smallest screen, such as smartphones and smartwatches. Numerous design teams are committed to continuously adjusting and optimizing the menu, interaction, content, and experience of small-sized devices.
However, the size of other screens is constantly increasing and more and more screens support touch. Some laptops and desktops are also equipped with touch screens. Some large tablets have already been launched, such as the 24 inch Nabi Big Tab and Tesla's 17 inch touchscreen. Because the screen size is calculated diagonally, Tesla's 17 inch screen is actually three times the size of the iPad's 9.7-inch screen. The screen area of Nabi Big Tab is six times that of iPad.
Just like the design of a small mobile screen is vastly different from that of a desktop computer, designing for a large touch screen also requires considering a series of different factors. The design of a large screen suitable for mouse operation may not necessarily be suitable for large touch screens; Suitable for small tablets may not necessarily work on large-sized touchscreens.
What do we need to consider when designing large-sized touch screens? Next, I will introduce my experience with my family using Nabi Big Tab, a 24 inch tablet designed for parents and children. One of the benefits of being a designer is the ability to occasionally add new things under the guise of research. My focus is not on device reviews, nor is it on usability analysis for specific applications or games; But rather explore the impact of device size and proportion on its experience.
Input: typing, tables, and gestures
The virtual keyboard input on the screen often feels awkward. When the keyboard is enlarged together with a 24 inch device, this awkwardness becomes even more abrupt. Pressing each key on BigTab requires arm movement, which cannot be done with just hands or fingers. On a virtual keyboard of this size, it is not even possible to input in a regular posture, let alone with the thumb. Do you want to reach all the buttons without moving your arms? There's no way! In addition, a large screen also means that the location where the typing results are displayed is also at a certain distance from the keyboard. On a small screen device, the keyboard is positioned close enough to the input box to check spelling at a glance. On the large screen, there is a certain distance between the input box and the keyboard, and you need to shift your gaze every time you press a key.
Dispersion of visual attention
Arm movements make each button action feel like an independent behavior. This type of independent writing attracts our attention because it requires a certain amount of work, rather than being imperceptible.
As for the form page, although the large screen should have exposed more content, the huge BigTab keyboard obscured most of the input boxes. Resulting in only one item being exposed at a time, making it impossible for users to see the next form item or even determine if there is another item.
The additional physical movements (effortless but noteworthy), coupled with the monotony of only seeing one content at a time, make the originally shorter process like device setup appear lengthy and cumbersome.
The gestures on the big screen are completely unrecognizable. Use only one finger to press a several inch wide object