send identifying information such as an IP address

translate written characters into voice output

read data from another device or item

display facial recognition output

Braille keyboard

tube that they either inhale or exhale

small gesture with one or more fingers

tapping or clicking sound

touch guidance

gesture recognition

body language

action identification

dots per inch

width relative to its height

depth divided by its length

audio quality

intensity between the brightest white and darkest black

brightness of the hues in the available color spectrum

relationship between the nits and candelas

diagonal width and diagonal height

use the user's small, sensitive gestures in order to make selections

interpret input from other users in a multiplayer game

overrides the user's noise-cancelling headphones to send urgent messages

sends resistance to the device in response to the actions of the user

producing information

instructing hardware

entering data

running a query

translate the audio from a digital video into on-screen captions

create printable output from voice input

scan printed materials and digitize them for a screen reader or Braille printer

enable them to instruct a program or app using only their feet

large quantities of cooled dyes onto specially coated paper

temperature-controlled liquid toner onto thin paper

electrically heated pins against heat-sensitive paper

mathematically-calculated quantities of ink onto iron-on patches

a 3-D digital monitor

an LCD display

nylon pins or magnets

voice-to-text technology