interacting with digital devices

Question 1

Dictation

Answer 1

Using a microphone words will be dictated to the computer, then software will recognise the words and turn them into text.

Question 2

Voice print

Answer 2

Here a user’s unique tone of voice is compared with the tone of voice previously recorded. This is used instead of a password/ID number to access a computer/identify oneself over the phone.

Question 3

Voice commands/voice control

Answer 3

a system analyses the sound and then analyses the words and uses them to complete a task.

Question 4

advantages to voice control

Answer 4

Users with a disability that prevents them from typing, can use speech input.

Hands-free advantages so users can multi-task.

Users find talking more natural than typing

Question 5

disadvantages to voice control

Answer 5

Background noise interferes with speech recognition

difficult to keep data input private as people can hear what you are saying

users who have a speech impediment will not be understood

Question 6

Keyboard

Answer 6

allows characters to be inputted

Question 7

Mouse

Answer 7

moves a cursor on the screen

Question 8

advantages to keyboard and mouse

Answer 8

you can use in in noisy environments

a keyboard is provided with most computers

people need little training to use them

Question 9

disadvantages to keyboard and mouse

Answer 9

excessive use can lead to health issues such as rsi

easy to make mistakes when typing

often disabled people find it difficult using keyboards

Question 10

Gesture

Answer 10

non-contact communication where a device, normally a camera; analyses body movement, often hands or arms, and changes it into rational input. Examples of this include swiping options on the screen to the left/right, or increasing the volume of music by raising the hand, or reducing the volume by lowering the hand.

Question 11

disadvantages to gesture

Answer 11

need to learn which gestures correspond to the correct command

accidental gestures can cause unwanted interaction

complex processing is requires to analyse gestures

Question 12

advantages to gesture

Answer 12

gestures feel natural

additional devices are not requires

possible to interact without touching surfaces

Question 13

Touch

Answer 13

A user will touch the screen to choose items from a menu and then the computer processes location and the ‘type’ of touch

Question 14

advantages to touch

Answer 14

intuitive

easier to use

no keyboard or mouse required

easy to learn

Question 15

disadvantages to touch

Answer 15

screens can be easily damaged

dirty screens are difficult to read

difficult to select small item

Question 16

Virtual Reality (VR)

Answer 16

user wears a headdress which projects images that represent specific data/programs to their eyes and they wear gloves/use special controls to interact with these images

can be used to train students without risks

Question 17

Augmented Reality (AR)

Answer 17

user wearing a headdress/glasses which project images that represent specific data/programs to their eyes, and they wear gloves/use special controls in order to interact with these images. Unlike virtual reality, augmented reality combines the graphics with the real world rather than immersing the user in an artificial, online world.

Question 18

Biometrics

Answer 18

Physiological characteristics relating to the shape of the body are usually used as biometric identifiers.

fingerprints, DNA, facial recognition