Hand check
Flexion Your hand therapist’s eyes at home.
Alexa leads a two-minute hand check by voice. Your camera measures how far each finger curls, and your routine only moves inside the limits your therapist wrote.
Why
Home hand exercises happen blind. Flexion gives them eyes.
Between therapist visits nobody sees how far your fingers really close. Flexion reads it every morning from a plain webcam, tells you when a change is real and not just day-to-day noise, and sends the week back to your therapist.
21
landmarks read per hand, every frame, on the device.
30fps
measured live in Chrome on a laptop GPU, under 12 ms per frame.
10.7%
noise floor (MDC95) of the fist reading across 10 repeats, so a real change stands out.
The noise band
Ten fists. One honest band.
Make the same fist ten times and the reading still wobbles. These are ten real fists from our 20 October validation run. A reading inside the hatched band is a normal day; only one outside it counts as change.
Tomorrow’s reading
0.200palm lengths
Normal day-to-day noise
Drag the glowing bead · or ← →
The fence
Progress, inside the lines your therapist drew.
Each morning the routine asks a little more, but its target never passes the limit your therapist wrote. Drag the post to move the limit and the month replays. This month is an illustration, not patient data.
Day 01 / 28
042% curl target
Building up
Two mornings well below your usual range. Switch to the gentle routine?
The grip
Squeeze. Feel the level.
Therapy putty comes in five resistances, and your therapist picks yours. Hold the putty to press the five fingertips in; let go and it creeps back. Scroll from extra soft to extra firm: the firmer it gets, the shallower the dents.
Resistance 01 / 05
000% squeeze
Extra soft
- Extra soft
- Soft
- Medium
- Firm
- Extra firm
Hold to squeeze · or Space · ↑ ↓ resistance
Sample check · one page ↓
The Monday report
Seven mornings. One page.
Every check becomes a single-arc reading. On Monday the week stacks into one printed page: each day against your usual band, the flare flagged in amber, and a line for your therapist to sign. Scroll to print it.
Sample week · 0 / 7 days
Printing…
Download the sample PDFMade by the same code that builds real reports
Get your own: a live check makes oneTry it live
Your hand, read live.
The same vision engine the coach uses, on your camera: both hands, every finger’s curl, and anything you hold, boxed. It stays quiet until you start a therapy session. Nothing loads until you tap.
Nothing leaves your device: the video stays in this tab, the hand model runs on your own GPU, and your report is made right here. With Talk on, your browser’s speech service hears you, and questions go to the coach (Amazon Nova 2 Sonic).
Try it with Alexa (Echo Show) ↗- · reps 00
Your hand therapist’s eyes at home, between visits.