Option 1
Dial
The ring is the cuff's pressure gauge. It fills as the cuff squeezes, leaves a mark at the peak and drains as the cuff lets go. The result lands on the same dial as a band from 82 to 124.
- Tells the patient
- How hard the cuff is squeezing and that it has passed its peak. For SpO₂ the dial reads 70 to 100 %. For glucose it counts down the meter's five seconds.
- Signal lost
- The arc turns grey and stays where it was. In B the blob greys and the panes dim.
- On the hub
- A: one Shape with arc sweeps and a Repeater of ticks, redrawn only when a reading arrives. B: adds today's blob and GlassTiles, the blob placed at the arc's tip.
- Watch
- A dial reads as a verdict. It stays blue until the result is in, so a high cuff pressure never looks like a high reading.
Option 2
Pulse
A ring leaves the reading on every heartbeat. Before the pulse is found, one slow ring every couple of seconds shows the hub is listening.
- Tells the patient
- That the device has found their pulse. As the BP cuff lets go the rings swell and fade with the cuff's own oscillations, strongest near 96 mmHg, the mean pressure.
- Signal lost
- No new rings, and the ones already moving fade out. In B the blob greys.
- On the hub
- A: six pooled Rectangles, scaled and faded per beat. B: today's blob, centred and scaled on each beat, with the rings drawn under GlassTiles.
- Watch
- The cuff and oximeter send a pulse rate, not single beats, so the rings are timed from the rate. They keep the right tempo but aren't a beat-by-beat record.
Option 3
Trace
A monitor strip under the reading: the pulse in the cuff for BP, the fingertip pulse wave for SpO₂, and one tick a second while the glucose meter counts down.
- Tells the patient
- It looks and moves like a clinical monitor, which reads as serious and precise.
- Signal lost
- The line goes flat and dashed while the write head keeps moving, so the gap stays visible afterwards.
- On the hub
- A: a 270-point polyline redrawn every frame. B: the same line drawn a second time under GlassTiles, with the blob as the pen.
- Watch
- The hub doesn't receive a waveform today, only the SpO₂ %, the pulse rate and the cuff pressure. A wave drawn from the rate looks like measured data, which a medical device must not fake.
Option 4
Calm
The backdrop breathes at a resting rate of 12 breaths a minute, under a quiet "Breathe normally". It shows no progress, only a pace to settle into.
- Tells the patient
- Nothing about the test, on purpose. Sitting calm and still is what a good BP reading needs from them.
- Signal lost
- It keeps breathing and turns grey, so the patient stays settled while the hub reconnects.
- On the hub
- A: one disc with a radial gradient on a scale animation. B: today's blob on the same breathing scale, centred instead of wandering.
- Watch
- Keep the pace at a normal resting rate. Slow guided breathing lowers blood pressure and would bias the reading, so check the rate with the clinical team.
Option 5
Tide
Colour rises from the bottom as the cuff inflates and drains as it lets go, so the screen matches what the patient feels on their arm. Each beat ripples the surface.
- Tells the patient
- The cuff's squeeze and release, and for SpO₂ and glucose how far along the test is.
- Signal lost
- The surface goes still and grey.
- On the hub
- A: a pre-drawn wave slid sideways and a height that eases. B: the wave under GlassTiles, with the blob placed on its surface.
- Watch
- The number sits over the colour. In A the tide stays within blue 100 to 200; in B the reading's pane keeps the contrast.