Keynoa Rings User manual

Keynoa
User Guide
Version 0.7
2022.06.08
Introduction 4
Accessibility 4
The Cherradi method 4
Basic Latin Languages Alphabet 5
Symbols & other Characters 7
Numerical Characters 9
Keynoa Main and Modified Characters 9
Latin languages' basic alphabet 10
Writing and reading Keynoa Modified Characters 10
Distinction between the First-tap and the Second Tap of a Keynoa Main
Character 11
Keynoa Application 12
Mobile phone orientation 12
Home screen and text input method appearance of Keynoa App 12
Installing Keynoa App 13
Giving Permission to install Keynoa App 13

Adding Keynoa to the list of text input methods (keyboards) of the mobile
phone 13
Setting Keynoa as the current text input method (keyboard) of the device 14
Unsetting Keynoa as the current keyboard of the device 14
Activating Keynoa Service 14
Enabling Bluetooth 15
Keynoa jingles 15
Keynoa settings default parameters 16
Using Cherradi method on a mobile phone touch screen 17
Keynoa Sliding-Finger-Menus 17
Main menu: 17
Settings of Keynoa as keyboard: 17
Settings of Keynoa Rings: 18
Settings of the speech engine: 19
Settings of sounds notifications: 19
Settings of the menus 19
Start/Stop actions: 20
Language layout selection: 21
Navigating Keynoa Sliding-Finger-Menus 21
Selecting choices in Keynoa Sliding-Finger-Menus 21
Keynoa finger gestures on the mobile phone screen 21
Tap-commands and touch-commands 22
Gesture-commands: 23
Control + letter commands: 24
Setting the reference positions of the fingers on the screen 26
How to tap with the fingers on the touch screen 26
Self-learning 26
Characters learning window: 27
Colors learning window: 27
Keynoa Rings 29
Getting started with Keynoa Rings 29
Pairing the Keynoa Rings with the mobile phone 29
Using Keynoa Rings with Keynoa App 29
Connecting Keynoa Rings to Keynoa App 29
Charging Keynoa Rings 30
Reading and writing with Keynoa Rings 30
Using Keynoa Rings for reading 30
Keynoa Rings buttons usage 31
Keynoa Rings buttons pressing commands to navigate across Keynoa settings
Menu 31
Keynoa Rings buttons pressing commands to navigate and edit a text 32
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Controlling the reading of a text with Rings buttons: 33
Keynoa Rings buttons pressing commands to Start/Stop specific features or
modes 34
Sensing colors from the touch screen 35
Troubleshooting 36
Out of sync situation 36
Loss of correspondence between the reference positions and the
finger-taps 36
Characters not from the desired language 36
Turning Talkback ON/OFF 36
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Introduction
The Keynoa based on the Cherradi method can be used with the Keynoa Rings
device or with the touch screen of an Android mobile phone. Using the Keynoa Rings
device the user can write and read with the Cherradi method and using the touch
screen of a mobile phone the user can write with the Cherradi method.
In this User Guide the user will learn about:
1. The Cherradi method.
2. The Keynoa App, and
3. The Keynoa Rings device.
Accessibility
This guide is prepared for blind people as well as for sighted people accompanying
blind people in their experience with Keynoa. Therefore, it contains graphical images
for the sighted readers, however, the content of these images is transcribed into text.
In addition, each image is annotated in texts for blind readers.
The Cherradi method
Applying the Cherradi method the user can input text (write) by producing
finger-tapson any surface using the Keynoa Rings device or by producing
finger-taps on the touch screen of an Android mobile phone.
Applying the Cherradi method the user can also read any text in digital format by
receiving small vibrations on the fingers using the Keynoa Rings.
What the user can write or read includes:
●alphabet characters in any language,
●numerical characters and symbols,
●punctuation signs,
●other characters and symbols,
●execute text editing commands, and
Using the Keynoa Rings the user can also navigate a text while reading it.
Note: Cherradi method uses the same combination of fingers to write or read a given
character or symbol.
With the Cherradi method, the user can sense the colors of the touch screen by
receiving vibrations on the fingers using the Keynoa Rings.
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Basic Latin Languages Alphabet
We refer here to English Alphabetical Characters as Basic Latin Languages Alphabet.
To write or read each of the 25 first letters of the basic Latin Languages Alphabet
combinations of two fingers are used; these two fingers are used successively one
after the other. To write one of these 25 letters, a First Tap with the first finger is
produced, followed by a Second Tap with the second finger. Similarly to read one of
these 25 letters a first vibration on the first finger is received, followed by a second
vibration on the second finger. Following this process, use the fingers indicated
below to produce taps for writing or receive vibrations on them for reading:
●the little finger followed again by the little finger for the letter “a”
●the little finger followed by the annular finger for the letter “b”
●the little finger followed by the middle finger for the letter “c”
●the little finger followed by the index finger for the letter “d”
●the little finger followed by the thumb for the letter “e”
●the annular finger followed by the little finger for the letter “f”
●the annular finger followed again by the annular finger for the letter “g”
●the annular finger followed by the middle finger for the letter “h”
●the annular finger followed by the index finger for the letter “I”
●the annular finger followed by the thumb for the letter “j”
●the middle finger followed by the little finger for the letter “k”
●the middle finger followed by the annular finger for the letter “l”
●the middle finger followed again by the middle finger for the letter “m”
●the middle finger followed by the index finger for the letter “n”
●the middle finger followed by the thumb for the letter “o”
●the index finger followed by the little finger for the letter “p”
●the index finger followed by the annular finger for the letter “q"
●the index finger followed by the middle finger for the letter “r”
●the index finger followed again by the index finger for the letter “s”
●the index finger followed by the thumb for the letter “t”
●the thumb followed by the little finger for the letter “u”
●the thumb followed by the annular finger for the letter “v”
●the thumb followed by the middle finger for the letter “w”
●the thumb followed by the index finger for the letter “x”
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●the thumb followed again by the thumb for the letter “y”
●The process is a bit different for writing or reading “z” the 26th letter of the
basic Latin Languages Alphabet. Producing a single-tap with the index finger
followed by a double-tap again with the index finger the user will write the
letter “z”. Similarly, a single-vibration on the index finger followed by a
double-vibration again on the index finger will allow the user to read the letter
“z”
(Following is a graphics image that illustrates 26 graphics where each graphic shows
the fingers to use for each of the 26 Latin basic letters)
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Symbols & other Characters
To write or read Symbols & other Characters use:
●simultaneously the thumb and the index finger for “Space”
●simultaneously the index finger and the middle finger for “Backspace”
●simultaneously the annular finger and the little finger for “ Enter”
●simultaneously the thumb and the middle finger for “.”
●simultaneously the thumb and the annular finger for “,”
●simultaneously the index finger and the annular finger for “;”
●simultaneously the index finger and the little finger for “:”
●the little finger followed by simultaneously the thumb and the middle finger
for “ ‘ “
●the little finger followed by simultaneously the index and the annular finger
for “@”
●the little finger followed by simultaneously the thumb and the little finger for
“!”
●the little finger followed by simultaneously the thumb and the annular finger
for “?”
●the little finger followed by simultaneously the index and the middle fingers
for “ shift “
●the little finger followed by simultaneously the thumb and the index for “ caps
lock “
●simultaneously the index, the middle, and the annular fingers to enter or exit
the Numerical Mode
●simultaneously the index, the middle, the ring, and the little fingers to hear or
read “ all words”
●simultaneously the middle, the ring, and the little fingers to hear or read “last
word “
●on the touch screen of the mobile phone tap simultaneously with all five
fingers to reset the finger-taps reference positions.
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(Following is a graphics image that illustrates 17 graphics where each graphic shows
the fingers to use for each of 17 specific symbols and characters and frequently used
commands)
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Numerical Characters
To write or read Numerical Characters the user need first to be in Numerical Mode.
To enter or exit Numerical Mode, simultaneously use the index, the middle, and the
annular fingers.
In Numerical Mode, to write or read Numerical Characters use:
●the little finger for “1”
●the annular finger for “2”
●the middle finger for “3”
●the index finger for “4”
●the thumb for “5”
●double-tap with the little finger to write “6” similarly receiving a
double-vibration on the little finger the user read “6”
●double-tap with the annular finger to write “7” similarly receiving a
double-vibration on the annular finger the user read “7”
●double-tap with the middle finger to write “8” similarly receiving a
double-vibration on the middle finger the user read “8”
●double-tap with the index finger to write “9” similarly receiving a
double-vibration on the index finger the user read “9”
●double-tap with the thumb to write “0” similarly receiving a double-vibration
on the thumb the user read “0”
Keynoa Main and Modified Characters
In the Cherradi method, Characters are organized for every language in two groups:
●a group of Main Characters and
●a group of Modified Characters.
Main Characters can all be obtained by 2 single-taps; each Main Character is written
by a first single-tap followed by a second single-tap. Similarly, every Main Character is
read by 2 single-vibrations; each Main Character is read by a first single-vibration
followed by a second single-vibration. Naturally, the number of Keynoa Main
Characters in any language is always equal to 5 x 5 = 25.
Consequently, Keynoa organizes the characters of a language in two groups; the first
group of 25 Main Characters and the second group of Modified Characters.
The group of Modified Characters is organized into subgroups; each subgroup of
Modified Characters modifies a specific Main Character.
The French alphabet is a good example to understand Keynoa Main and Modified
Characters as it contains numerous Keynoa Modified Letters. In Keynoa, French
Modified Letters are:
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●letters à, á, â,ä,and æ modifying the Main Letter a
●letter çmodifying Main Letterc
●letters è, é, ê, and ë modifying Main Letter e
●letters î and ïmodifying Main Letter i
●letters ô and œmodifying Main Lettero
●letters z modifying Main Letters
●letters û, ù, and ümodifying the Main Letteru
●letter ÿmodifying Main Lettery
Therefore, a subgroup of modified characters can consist of one or several modified
characters. In other words:
●Main Letter acan be modified by a subgroup of 5 letters: à, á, â,äà,and æ
●Main Letter ccan be modified by a subgroup of 1 letter: ç
●Main Letter ecan be modified by a subgroup of 4 letters: è, é, ê, and ë
●Main Letter ican be modified by a subgroup of 2 letters: î and ï
●Main Letter ocan be modified by a subgroup of 2 letters: ô and œ
●Main Letter scan be modified by a subgroup of 1 letter: z
●Main Letter ucan be modified by a subgroup of 3 letters: û, ù, and ü
●Main Letter ycan be modified by a subgroup of 1 letter: ÿ
Latin languages' basic alphabet
In Keynoa we refer to the English language alphabet as the Latin languages’ basic
alphabet as it is the simplest; it has 25 Keynoa Main Letters “a” to “y” and one Keynoa
Modified Letter “z” that is modifying letter “s”.
Writing and reading Keynoa Modified Characters
To write a modified character, identify first the main character it modifies and tap the
first single-tap with the finger corresponding to the main character in question then
produce a double-tap (instead of a single-tap) with the finger of the Second Tap. Two
cases are then possible:
●Case 1: There is only one character modifying the Main Letter in question; in
this case, after the double-tap, this modified character is produced
immediately.
For example, the modified letter z is obtained by a single-tap with the index
finger followed by a double-tap again with the index finger.
●Case 2: There is more than one character in the subgroup of characters
modifying the main character in question; in this case after producing the
double-tap, the first modified character in the subgroup is proposed. After
that,
■a single-tap with the little finger for the first modified letter.
■a single-tap with the annular finger for the second modified letter.
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