Manufacturing feasibility assessment
5. Verdict
Computer-vision or wearable sensing can verify the five steps, but clinical validation, privacy, infection-control ruggedization, and hospital integration are significant; start with a 20-bed pilot.
6. Subsystems
- 6.1 Wearable badge electronicsMEDIUM
- 6.2 Room/location infrastructureHIGH
- 6.3 Hand-hygiene event sensingHIGH
- 6.4 Workflow inference softwareHIGH
- 6.5 Cloud, dashboards and integrationsMEDIUM
- 6.6 Enclosure and infection-control durabilityMEDIUM
- 6.7 Regulatory and privacy packageHIGH
7. Bill of materials
| Item | 100 | 1,000 | 10,000 |
|---|---|---|---|
| 7.1 Wearable PCB, BLE/UWB radio and antennas | $42–58 | $27–38 | $20–29 |
| 7.2 Battery, power management and charging contacts | $14–21 | $9–14 | $7–11 |
| 7.3 Cleanable wearable enclosure, clip and seals | $18–28 | $10–16 | $6–10 |
| 7.4 Dispenser sensor/interface allocation per worker | $20–35 | $13–23 | $9–16 |
| 7.5 Room anchor/gateway allocation per worker | $32–60 | $19–36 | $14–27 |
| 7.6 Assembly, test, calibration and traceability | $16–26 | $10–17 | $7–12 |
| 7.7 Packaging, charger and spares allocation | $12–20 | $8–13 | $6–9 |
| 7.8 Estimated hardware BOM per deployed worker | $154–248 | $96–157 | $69–114 |
At 10k deployed-worker kits, tooling amortises to about $45–110 per kit: 23–55% of $200 retail or 6–14% of $800 retail. A $200 all-in retail position is not credible with room infrastructure; use subscription, site fees or a higher device price.
8. Gates to clear
8.1 [DFM]
Location accuracy and dispenser-event correlation must remain reliable across metal equipment, curtains, moving beds and differing ward layouts.
Path: Run 2–3 ward pilots with an RTLS integrator; map anchor density, perform RF surveys, then freeze a zone-calibration and factory functional-test process.
8.2 [Certification]
A global connected product requires region-specific radio compliance and privacy-safe claims; diagnostic or infection-reduction claims may trigger added regulation.
Path: Use an accredited test laboratory for US FCC Part 15, EU RED/EMC/CE and UKCA, then appoint local approval partners for target countries; position initially as workflow/compliance monitoring and obtain hospital privacy review.
8.3 [Tooling]
The $200 floor cannot absorb badge hardware, shared RTLS infrastructure, tooling amortisation, installation and support at early volumes.
Path: Commercialise as a site deployment: sell or lease infrastructure separately, price badges nearer the upper retail range, and recover analytics, support and replacement costs through annual SaaS.
9. Prototype sequence
- 9.1Define the exact compliance model: WHO Five Moments evidence, five handwashing technique steps, or a narrower dispenser-use metric.The sensing architecture and validation burden differ materially; no current badge can infer every clinical interaction without defined assumptions.
- 9.2Build 30–50 BLE/UWB badges, instrument selected dispensers and install temporary anchors in one representative ward.This tests radio performance, charger behaviour, staff acceptance and infrastructure density before committing to tooling.
- 9.3Collect supervised observation data alongside device events for 4–8 weeks.Ground truth is needed to quantify false positives, missed events and whether the inference model is clinically useful.
- 9.4Revise hardware and workflow rules, then run a two-site pilot with infection-control and IT/privacy teams.Two different ward layouts expose deployment variability and establish the evidence needed for a commercial specification.
- 9.5Freeze claims, complete pre-compliance RF/EMC testing, and commission production tooling after pilot acceptance criteria are met.This avoids certifying or tooling a design before the sensing model and hospital workflow have been proven.
Assessment criteria: J. Tanikella · Engine: GPT-5.6 Terra.
