This document discusses and compares different touchscreen unlock methods and their tradeoffs in terms of speed, precision, expression, and control. It proposes a new "TouchaTune" method of unlocking a device by playing a musical phrase using simultaneous finger touches for greater speed, precision, expression and control compared to iOS, Android, and Surface unlock methods. The document advocates for further exploration of musical approaches to touchscreen interaction that unlock additional expressive possibilities.

2. TOUCHA TOUCHA TOUCHA TOUCH ME
hardcore fans will criticize the spelling

3. TACTICAL
do we have to memorize this?

5. STRATEGIC
should we be thinking at a different level?

7. WHY BOTHER?
let's just trust in Apple/Google/whomever

8. Looking is optional...
and sometimes frowned upon

9. Walking and texting...
can turn a mall pell-mell into a pool

10. A city street...
as it really is

11. A city street...
as we wish it to be

12. A city street...
as we think it might me

13. A city street...
as it was before hitting a mailbox

14. If this was a first-person shooter...
we'd have a controller

15. WHAT IS TOUCH?

17. MR. WEBSTER SAYS

18. MIKE POSTULATES
"Toucha"
A method of Human-Machine Interaction enabling
Control and Expression with Precision and Speed
CEPS:
Control Expression Precision Speed
SPEC: Speed Precision Expression Control

19. HUMAN:MACHINE INPUT
what's the best?

20. Pitch + Rhythm + Harmony + Simultaneity +
Volume + Expression/Vibrato ++++
Instantaneous, Precise, Expressive Control

21. Are we going in the right direction?

22. UNLOCK SCREENS
you tell me

23. iOS UNLOCK
What data was collected?
1-2-3-4
What was required?
1-3 Fingers, 4x Touches, Peripheral Vision to Ensure Precision
S2 P3 E1 C2 Security3

24. ANDROID UNLOCK
What data was collected?
8-1-5-3-2-4-7
What was needed?
1 Finger, 1 Continuous Touch, Peripheral Vision to Ensure Precision
S3 P2 E1 C2 Security2

25. SURFACE PICTURE PASSWORD
What data was collected?
Point XY, Circle of radius C around point AB, Segment from X1Y1 to X2Y2
1-3 Fingers, 3x Touch Sequences, 2 w/ Continuous Touch, Direct Vision 3x to
Ensure Precision
S2 P2 E2 C3 Security4

26. Speed Precision Expression Control
iOS 2 3 1 2
Android 3 2 1 2
Surface 2 2 2 3

27. WHAT WOULD MOZART DO?
music meets the touchscreen

28. An unlikely approach

29. Only works for Will.i.am

30. WHAT CAN WE DO NOW?
Pitch? + Rhythm + Simultaneity (1-5 Fingers) +
Glissando + Expression/Vibrato?

31. Any musical phrase, any length
1-5 fingers, any combo of recorded touches
Done without looking, accuracy checked, and...

33. Speed Precision Expression Control
iOS 2 3 1 2
Android 3 2 1 2
Surface 2 2 2 3
TouchaTune 3 4 4 4

35. IF ONLY WE HAD MORE TIME
we'd talk about lots of things

36. SENSES WIDE OPEN

37. @infochemist