Revision 7T · Full Tutorial Edition · Updated 1 September 2026
PWR-219 · SELF GUIDED full tutorial
Learn and test a four-pattern haptic code without turning it into a safety alert
This lesson teaches a small, optional tactile-code method. You will learn two user-started patterns, add two only if comfortable, build a confusion matrix, retest after delay and compare with a visual or text channel. The result is code- and device-specific.
What you will produceThe learner identifies four benign user-started patterns from a locked codebook with at least 80% accuracy on a novel sequence and names the confused pairs, replay use and sensory burden.
Full step-by-step individual tutorial · TLU-PWR-219
The learner identifies four benign user-started patterns from a locked codebook with at least 80% accuracy on a novel sequence and names the confused pairs, replay use and sensory burden.
Use a visual pulse strip, audio-free text labels or optional gentle vibration on a familiar device.
Learn a maximum of four benign patterns for fictional labels such as north, east, south and west.
Stop, reduce the set or use another channel whenever touch is uncomfortable or inaccessible.
Qualified help is required for
Any medical, emergency, navigation, workplace, communication-device or accessibility-system fitting.
Changing intensity or placement when skin, nerve, sensory-processing or clinical factors may matter.
Use with a person who cannot freely start, stop or report discomfort.
Never do this from the page alone
Use the patterns for medication, alarms, traffic, rescue, door access or other consequential messages.
Increase intensity or duration to force recognition.
Claim a universal skin language or transfer to another device, body site or codebook.
2 · Get ready
Gather what you need and check the starting conditions
What you need
Four supplied printed pulse strips with this locked codebook: Red is one long pulse; Blue is two short pulses; Green is short then long; Yellow is long then short. A long pulse lasts 600 milliseconds, a short pulse 200 milliseconds and the gap is 400 milliseconds.
Optional user-controlled vibration device at a comfortable preset; visual and text alternatives remain available.
Twenty supplied test cards in concealed order R, B, G, Y, B, R, Y, G, R, G, B, Y, G, Y, R, B, Y, G, B, R; a separate answer strip spelling out those twenty labels, a replay counter, confusion matrix and comfort scale. Cards 1 to 12 form the mixed block and cards 13 to 20 form the delayed block.
Before you start
Choose a comfortable body site or use the visual-only version; inspect skin and remove tight clothing or jewellery near an optional device.
Assign four neutral meanings and mark the device, software, waveform, body site and replay limit.
Set the stop rule: any pain, numbness, persistent tingling, skin change, nausea or overload ends tactile practice.
3 · The method
Follow these steps in order
Define the four-code boundary
Write the exact pattern, neutral meaning, device and body site for each code; state that the set is not an alert system.
Why: The same pulse can mean something different in another codebook.
Check: Every label has one visible pattern and no safety-critical meaning.
Learn the first pair
Start each pattern yourself, view its pulse strip and say or select its label; alternate the two patterns six times.
Why: Two-item discrimination reveals basic fit without overload.
Check: The learner identifies both labels twice in a row without extra replay.
Test the pair blind to order
Shuffle six cards or have a helper choose them; lock each answer and confidence before revealing the label.
Why: Random presentation prevents memorising a fixed card position instead of the pulse pattern.
Check: The sheet records accuracy, replays and any A-for-B confusion.
Add the second pair
Only if comfortable, teach the remaining two patterns as a separate pair before mixing all four.
Why: Pairwise learning makes a confused waveform easier to repair.
Check: Each new label is identified twice consecutively in its pair.
Build the confusion matrix
Run twelve mixed trials and tally each response against the actual code in a four-by-four table.
Why: Total accuracy can hide one repeatedly confused pair.
Check: The largest off-diagonal cell names the pair that needs repair.
Repair one waveform distinction
Change one harmless feature of the confused pair, such as pulse count or gap, keep intensity fixed and repeat four matched trials.
Why: One controlled change shows whether the code, not effort, caused the error.
Check: The repaired pair improves or is retired with the before/after counts visible.
Retest later and by another channel
After at least 48 hours, run a new eight-item sequence, then match the same labels using the visual strips or text legend.
Why: Retention and channel dependence are separate questions.
Check: Delayed tactile and alternative-channel scores are reported separately.
Decide keep, shrink or retire
Keep four codes only if accuracy, burden and value meet the predeclared rule; otherwise return to two or use the alternative.
Why: A smaller accessible vocabulary may be the better capability.
Check: The decision names accuracy, confusions, replays, comfort and intended low-stakes use.
4 · Worked example
See the whole method used once
Scenario
A learner uses four optional gentle pulse patterns to represent the four fictional file bins Red, Blue, Green and Yellow; the patterns never trigger an action.
Walkthrough
They learn Red as one long pulse and Blue as two short pulses, then score 6/6 in random order.
They add Green as short–long and Yellow as long–short, then score 9/12 mixed trials.
The confusion matrix shows Green called Yellow twice, so they widen only the middle gap in Yellow and score 4/4 on that pair.
Two days later they score 7/8 with one replay and 8/8 with visual strips, reporting comfort 1/10.
Result
The learner retains this four-label code on the same device and body site with one remaining error. This does not show language learning, cross-device transfer or suitability for alerts.
5 · Right and wrong
Compare correct or safer execution with the common wrong version
Right and wrong comparison
Moment
Right / safer
Wrong / riskier
Why it matters
Choosing messages
Use neutral fictional labels with no consequence if confused.
Encode medicines, danger or navigation directions.
A code-learning error must not become a real-world harm.
Progressing decision point
Add codes only after pair discrimination is stable and comfortable.
Raise vibration strength whenever accuracy falls.
Intensity can increase burden without fixing an ambiguous pattern.
Scoring decision point
Use a confusion matrix and replay count.
Report only the best percentage from repeated attempts.
Best-score reporting hides unstable pairs and support dependence.
Changing devices
Create a new baseline for a new actuator, body site or waveform.
Assume a learned label transfers because its name is unchanged.
Tactile perception depends on the physical signal and location.
6 · Common mistakes
Spot the error and apply the correction
Common mistakes and corrections
Mistake
Fix
Scoring haptic patterns without verifying delivered pulse timing.
Use fixed waveform cards or settings and verify the delivered pattern before scoring.
Repeating haptic cards in a learnable fixed order.
Shuffle the test sequence and avoid equal repeating cycles.
Showing haptic meaning labels during blind discrimination.
Hide text labels during test trials and lock the answer before feedback.
Confusion hidden by total accuracy
Inspect off-diagonal matrix cells and repair or remove the worst pair.
Trading haptic comfort limits for higher recognition accuracy.
Record comfort every block and stop rather than trading discomfort for accuracy.
7 · Practice
Turn the steps into a usable skill
First session
Choose neutral meanings, record the configuration and review the stop rule.
Learn and test the first pair for at most 12 presentations.
Add and test the second pair only if comfort remains acceptable.
Run one 12-item mixed test and repair one confused pair with four trials.
Finish with the visual/text alternative and a keep, shrink or retire decision.
Repeat plan
Retest once after at least 48 hours with eight novel-order items on the same device and site. If retained and useful, use no more than two short blocks per week for two weeks; any configuration change starts a new baseline.
Progress when
Pair accuracy is stable without exceeding the replay limit.
Novel-order four-code accuracy reaches the declared threshold and no pair is persistently confused.
Comfort remains acceptable during the session and after device removal.
Do not progress when
Skin sensation or appearance changes, discomfort rises or attention becomes overloaded.
Accuracy depends on fixed order, visible labels or repeated replay.
The learner proposes an alert, navigation, medical or emergency use.
8 · Check the result
Measure what changed
Same-device recognition and confusion for a four-pattern benign code
How: Use a locked random sequence; record actual code, response, correctness, confidence, replays, body site and comfort, then calculate accuracy and the confusion matrix.
Good result: At least 80% on a novel eight-item delayed sequence, no pair confused more than once, no stop symptom and no extra replay beyond the declared limit.
This does not prove: It does not prove a new sense, language comprehension, cross-device transfer, safety-alert reliability or independence from other channels.
Self-check
Can you draw or describe every pattern without saying only its label?
Which two codes are most often confused, and what one change repaired them?
What was the delayed same-device score and the alternative-channel score?
Can you state why a new body site creates a new configuration?
9 · Stop, adapt or get help
Keep the safety boundary practical
Stop and get help
Stop for pain, numbness, persistent tingling, redness, swelling, headache, nausea, dizziness or sensory overload.
Stop if the learner cannot freely start and stop each cue or communicate discomfort.
Route any medical, assistive, emergency or occupational application to the relevant qualified provider.
Accessibility and adaptations
Use printed pulse strips, text labels or optional audio descriptions as equal alternatives to vibration.
Allow a two-code vocabulary, larger gaps and longer response time; accuracy is compared only within the declared format.
Choose another body site only as a new configuration and never remove an established sensory aid to force tactile use.
10 · Evidence and limits
Why these instructions are here
primary research
People can learn a particular wearable haptic code, including phoneme-related patterns, but this does not establish a universal tactile language or broad transfer.
Progress is saved only in this browser on this device.
Step-by-step learner mode
Each activity includes its success check, a nearby accessible alternative and an “I’m stuck” correction path. Alternatives preserve the target where possible; when they change the task, Titan labels them as related rather than equivalent.
01
Define the four-code boundary
Write the exact pattern, neutral meaning, device and body site for each code; state that the set is not an alert system.
Why this step exists
The same pulse can mean something different in another codebook.
Success check
Every label has one visible pattern and no safety-critical meaning.
I’m stuck on this step
Reset: Re-read this authored instruction — “Write the exact pattern, neutral meaning, device and body site for each code; state that the set is not an alert system.” — and its success check, then attempt only this step.
Possible snag: The result from “Write the exact pattern, neutral meaning, device and body site for each code; state that the set is not an alert system.” does not yet meet this declared check: Every label has one visible pattern and no safety-critical meaning.
Correction: Return to the start of “Define the four-code boundary”, reduce complexity or pace, and repeat only the part needed to satisfy: “Every label has one visible pattern and no safety-critical meaning.”
Stop / get help: Stop for pain, numbness, persistent tingling, redness, swelling, headache, nausea, dizziness or sensory overload.
02
Learn the first pair
Start each pattern yourself, view its pulse strip and say or select its label; alternate the two patterns six times.
Why this step exists
Two-item discrimination reveals basic fit without overload.
Success check
The learner identifies both labels twice in a row without extra replay.
I’m stuck on this step
Reset: Re-read this authored instruction — “Start each pattern yourself, view its pulse strip and say or select its label; alternate the two patterns six times.” — and its success check, then attempt only this step.
Possible snag: Scoring haptic patterns without verifying delivered pulse timing.
Correction: Use fixed waveform cards or settings and verify the delivered pattern before scoring.
Stop / get help: Stop for pain, numbness, persistent tingling, redness, swelling, headache, nausea, dizziness or sensory overload.
03
Test the pair blind to order
Shuffle six cards or have a helper choose them; lock each answer and confidence before revealing the label.
Why this step exists
Random presentation prevents memorising a fixed card position instead of the pulse pattern.
Success check
The sheet records accuracy, replays and any A-for-B confusion.
I’m stuck on this step
Reset: Re-read this authored instruction — “Shuffle six cards or have a helper choose them; lock each answer and confidence before revealing the label.” — and its success check, then attempt only this step.
Possible snag: Repeating haptic cards in a learnable fixed order.
Correction: Shuffle the test sequence and avoid equal repeating cycles.
Possible snag: Showing haptic meaning labels during blind discrimination.
Correction: Hide text labels during test trials and lock the answer before feedback.
Stop / get help: Stop for pain, numbness, persistent tingling, redness, swelling, headache, nausea, dizziness or sensory overload.
04
Add the second pair
Only if comfortable, teach the remaining two patterns as a separate pair before mixing all four.
Why this step exists
Pairwise learning makes a confused waveform easier to repair.
Success check
Each new label is identified twice consecutively in its pair.
I’m stuck on this step
Reset: Re-read this authored instruction — “Only if comfortable, teach the remaining two patterns as a separate pair before mixing all four.” — and its success check, then attempt only this step.
Possible snag: The result from “Only if comfortable, teach the remaining two patterns as a separate pair before mixing all four.” does not yet meet this declared check: Each new label is identified twice consecutively in its pair.
Correction: Return to the start of “Add the second pair”, reduce complexity or pace, and repeat only the part needed to satisfy: “Each new label is identified twice consecutively in its pair.”
Stop / get help: Stop for pain, numbness, persistent tingling, redness, swelling, headache, nausea, dizziness or sensory overload.
05
Build the confusion matrix
Run twelve mixed trials and tally each response against the actual code in a four-by-four table.
Why this step exists
Total accuracy can hide one repeatedly confused pair.
Success check
The largest off-diagonal cell names the pair that needs repair.
I’m stuck on this step
Reset: Re-read this authored instruction — “Run twelve mixed trials and tally each response against the actual code in a four-by-four table.” — and its success check, then attempt only this step.
Possible snag: Confusion hidden by total accuracy
Correction: Inspect off-diagonal matrix cells and repair or remove the worst pair.
Stop / get help: Stop for pain, numbness, persistent tingling, redness, swelling, headache, nausea, dizziness or sensory overload.
06
Repair one waveform distinction
Change one harmless feature of the confused pair, such as pulse count or gap, keep intensity fixed and repeat four matched trials.
Why this step exists
One controlled change shows whether the code, not effort, caused the error.
Success check
The repaired pair improves or is retired with the before/after counts visible.
I’m stuck on this step
Reset: Re-read this authored instruction — “Change one harmless feature of the confused pair, such as pulse count or gap, keep intensity fixed and repeat four matched trials.” — and its success check, then attempt only this step.
Possible snag: The result from “Change one harmless feature of the confused pair, such as pulse count or gap, keep intensity fixed and repeat four matched trials.” does not yet meet this declared check: The repaired pair improves or is retired with the before/after counts visible.
Correction: Return to the start of “Repair one waveform distinction”, reduce complexity or pace, and repeat only the part needed to satisfy: “The repaired pair improves or is retired with the before/after counts visible.”
Stop / get help: Stop for pain, numbness, persistent tingling, redness, swelling, headache, nausea, dizziness or sensory overload.
07
Retest later and by another channel
After at least 48 hours, run a new eight-item sequence, then match the same labels using the visual strips or text legend.
Why this step exists
Retention and channel dependence are separate questions.
Success check
Delayed tactile and alternative-channel scores are reported separately.
I’m stuck on this step
Reset: Re-read this authored instruction — “After at least 48 hours, run a new eight-item sequence, then match the same labels using the visual strips or text legend.” — and its success check, then attempt only this step.
Possible snag: The result from “After at least 48 hours, run a new eight-item sequence, then match the same labels using the visual strips or text legend.” does not yet meet this declared check: Delayed tactile and alternative-channel scores are reported separately.
Correction: Return to the start of “Retest later and by another channel”, reduce complexity or pace, and repeat only the part needed to satisfy: “Delayed tactile and alternative-channel scores are reported separately.”
Stop / get help: Stop for pain, numbness, persistent tingling, redness, swelling, headache, nausea, dizziness or sensory overload.
08
Decide keep, shrink or retire
Keep four codes only if accuracy, burden and value meet the predeclared rule; otherwise return to two or use the alternative.
Why this step exists
A smaller accessible vocabulary may be the better capability.
Success check
The decision names accuracy, confusions, replays, comfort and intended low-stakes use.
I’m stuck on this step
Reset: Re-read this authored instruction — “Keep four codes only if accuracy, burden and value meet the predeclared rule; otherwise return to two or use the alternative.” — and its success check, then attempt only this step.
Possible snag: Trading haptic comfort limits for higher recognition accuracy.
Correction: Record comfort every block and stop rather than trading discomfort for accuracy.
Stop / get help: Stop for pain, numbness, persistent tingling, redness, swelling, headache, nausea, dizziness or sensory overload.
Correct versus incorrect execution
These accessible process diagrams are built from the tutorial’s own right/wrong teaching. They are not anatomical illustrations and do not add technique beyond the canonical tutorial.
Choosing messages — A code-learning error must not become a real-world harm.
Correct / safer
Use neutral fictional labels with no consequence if confused.
Wrong / riskier
Encode medicines, danger or navigation directions.
Progressing decision point — Intensity can increase burden without fixing an ambiguous pattern.
Correct / safer
Add codes only after pair discrimination is stable and comfortable.
Wrong / riskier
Raise vibration strength whenever accuracy falls.
Scoring decision point — Best-score reporting hides unstable pairs and support dependence.
Correct / safer
Use a confusion matrix and replay count.
Wrong / riskier
Report only the best percentage from repeated attempts.
Changing devices — Tactile perception depends on the physical signal and location.
Correct / safer
Create a new baseline for a new actuator, body site or waveform.
Wrong / riskier
Assume a learned label transfers because its name is unchanged.
Method-structure checklist
10 of 10 structural checks present
✓ Ordered, Power-specific instructions — present
✓ Every activity has a success check — present
✓ Materials or supplied records are declared — present
✓ Measurement or assessment rule is present — present
✓ Tutorial-specific troubleshooting is present — present
✓ Stopping or escalation boundary is present — present
✓ Every activity has an adjacent alternative — present
✓ Correct-versus-incorrect comparison is present — present
✓ Evidence context is bound to the Power record — present
✓ Planning metadata is present — present
The method-readiness band and presence checklist assess tutorial presentation and are separate from evidence quality for the underlying Power. They are automated editorial aids, not human approval.
Manual editorial sign-off: Pending. This tutorial must not display a human-approved state until an identified editor signs the exact content hash.