Also diversity of age and ability. Examples include tiny, low contrast text. On-screen controls that challenge fine motor control. Also on the US-style formats,

Also diversity of age and ability. Examples include tiny, low contrast text. On-screen controls that challenge fine motor control. Also on the US-style formats, poor or non-existent support for non-Latin alphabets. Try booking a commercial airline flight with a name that includes anything but the 26 English letters.