...
Safety:
- Pros
- The user is able to edit anything he as already typed, so if he
changes his mind and wants to type something completely different he
can.
- Recent errors are very easy to correct. A mistyped letter can be
erased or overwritten with 1 navigation movement.
- We will make use of audio cues (like an aesthetic beep) to signal the
user that he has held the key long enough for the long keypress
operations.
- Cons
- Hiding the character selected in the character selector will be
difficult for textboxes the perform password entry. There will be a
short period of time when the character just typed is visible to
anyone looking at the screen.
 Image Added | 1. Billy wants to enter his username "BILLY". He moves up/down until 'B' is
selected. Then presses the right arrow to insert 'B' and advance the cursor. |
|  Image Added | 2. The cursor now points to the second position in the text box. The character
selector retains its last selection, so it is still at 'B' (this is to avoid
state changes that the user would not anticipate and allow easy typing of double
letters). Billy pages down until he sees 'I', selects it and moves right. He
repeats this for 'L', 'L', and 'Y'. |
| |
 | 3. Billy has finished entering his username and presses 'select' to move on. He
is now at a new textbox in which he must enter his password "CACTUS". He
follows the same process as for his username. The only difference is that this
time every character that he inserts changes to an asterisk after one second.
Moving the cursor reveals the character that it is under for exactly one second
before it turns back into an asterisk.
Billy scrolls down to 'C', then presses the right arrow. A plain 'C' is visible
in the textbox for one second before turning into an asterisk. Billy forgot
which character he just typed, so he presses the left arrow, moving the cursor
under the first character in the textbox. The 'C' is revealed for one second
before turning back into an asterisk. |
 | 4. Billy has finished entering his password and presses select. He is now in
the movie search field and wants to search for 'TERRAFERMA'. This textbox
supports auto-complete (with a list of available movies). As Billy begins
typing, the most likely entry (by whatever metric the source of the
auto-complete items provides) that has as a prefix what Billy has already typed
appears in the textbox. Whatever has been autocompleted appears in a greyed out
color. Billy can hold select at any time to accept the auto-complete item or
simply press select to search only based on what he has typed.
Billy types 'TER' and the autocomplete mechanism suggests 'TERMINATOR' as the
most popular entry with prefix 'TER'. In the textbox, 'MINATOR' appears in grey
after what Billy has already typed. |
 | 5. This is not what Billy wants, so he continues typing and enters 'R'. Now
auto-complete suggests 'TERRAFORMA' so Billy holds select to choose that Movie. |