![]() ![]() This is especially useful if the user’s attention is divided between different tasks. They’ll be able to tap it with a faster reaction time and higher accuracy. The buttons users use the most frequently are now easier to spot and tap. The example demonstrates the use of the button size standard to indicate priority. No longer do you have to pick an arbitrary size and hope that it’s user-friendly. ![]() By following the button size standard, you can indicate priority in an effective way. This way users know which actions will lead them to the most desired result. When using an array of buttons, it’s important to indicate priority. The 72 pixel button produced the highest touch accuracy and was preferred by older users. The most preferred button size was 60 pixels, which is about the middle of the range. This means that 42 pixels is the minimum and 72 pixels is the maximum button size that’s most optimal for users. The highest accuracy was found with buttons between 42-72 pixels. Buttons that were over 72 pixels also had low accuracy. The study found that users had the lowest touch accuracy on buttons that were less than 42 pixels. Luckily, research on button size and spacing has discovered a standard that works for most users, including the elderly. It’s hard to know if your buttons are optimal without a standard to go by. The measurements below are in CSS pixels at 96 DPI. If you’re not sure what’s optimal, this article will reveal the answer. If they don’t have an optimal size and spacing, it’s no wonder users are missing their target or hitting the wrong button. Tap, tap, tap! Are users able to hit your mobile buttons with high touch accuracy, or are they missing their target? Before you blame the user, check the size and spacing of your buttons.
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