Estimate Waiting Time in a Single-Switch Scan
See how target order changes a single-switch selection wait. Enter the target position, dwell interval and measured activation time rather than guessing which menu feels slow.
1 · target | position in scan | activation seconds
FIRST-LOAD
Input is processed locally. A state link encodes your inputs in its URL: share only non-sensitive rows. Browser history, clipboard and anyone receiving the link may retain it. Optional AI use below leaves this device; it is not required.
Data note: Everything runs in this browser tab on the scan escapement: your target | position in scan | activation seconds stays on this device, nothing is uploaded, and the reading is rebuilt only when you press run.
Perspective: Before: Activation time already describes selecting the highlighted target. After: the scan escapement shows the working beside each named row so the reader can change the assumption and inspect the consequence.
2 · Read the scan escapement
This timing model is not an assistive-technology prescription or an emergency communication system. Trial changes with the user and an occupational therapist or access specialist.
Paid layer: scan escapement print and history
one-time step · the free reading above stays complete
Free tier
- one complete scan escapement run in the app
- three samples plus unlimited article-demo runs
- unwatermarked result text and an explicit, user-triggered state link
What $4 one-time adds
- print the scan escapement with its row workings
- CSV of seconds per selection and row explanations
- last five reading summaries saved in this browser profile
$4 once for repeated filing of the scan escapement, not for a better answer. Illustrative time basis: avoiding one five-minute manual reformat per saved reading; no market-price or guaranteed-savings claim.
Local history (this device)
- No saved runs yet — your first run files here.
Checkout is unavailable until a payment link is configured. The optional unlock is browser-local, profile-scoped and best-effort, not server-verified access. Clearing browser data can remove it; there is no account or cross-device recovery.
Boundary and sources
This timing model is not an assistive-technology prescription or an emergency communication system. Trial changes with the user and an occupational therapist or access specialist.
- Method: Measure a setting the user can activate reliably. A faster interval is not automatically better if it increases missed targets; the result does not measure fatigue or accuracy.
- All sample records are invented examples. The app does not fetch measurements, policies, files or personal records.
- Google’s official pricing page, fetched 2026-09-27, lists free-tier access including AI Studio. Optional formatting only; limits and availability can change. Free-tier content may be used to improve products. Never paste private records there.
Mechanism: competence-autonomy-loop
Optional AI formatting, not calculation
For this scan escapement, use the free AI Studio interface only if available to you, with no paid API key. Manual entry completes the same workflow for free. Supply only fictional or non-sensitive notes. Review its output against the source; never paste unresolved questions into the numeric rows.
Format my non-sensitive notes for a scan escapement. Return plain rows only: target | position in scan | activation seconds. Preserve supplied quantities exactly. Do not guess missing values; list questions separately. Do not calculate or add advice. I will check every row before pasting into the local tool.
Accepted schema: target | position in scan | activation seconds. No AI response is executed as code.