Sportviz Toolkit - Weigh-in Module
Effortless weigh-in management for combat sports events
The Problem
Weigh-ins at combat sports events are often stressful not just because of speed, but because disputes can quickly become a problem. When weight results are tracked on paper or passed around manually, there is often no reliable proof of what was recorded, creating tension for organizers, coaches, and athletes. With digital weigh-ins and printed receipts for every measurement, each result has a clear paper trail that helps prevent disputes before they start and makes resolving questions simple and fast. On top of that, organizers reduce queues, avoid manual errors, and run a smoother, less chaotic weigh-in process.
The Solution
The Weigh-in module of Sportviz Toolkit is a purpose-built digital weigh-in station that turns any laptop and a consumer Bluetooth scale into a professional-grade system. It connects directly to Xiaomi Mi Smart Scales, validates weights against category limits in real-time, and prints official receipts - all from a single browser tab. No special hardware. No expensive proprietary systems. Just open a browser and start weighing.
Key Features
Bluetooth Scale Integration
Connect wirelessly to Xiaomi Mi Scale V1, Mi Body Composition Scale V2, or Xiaomi Smart Scale S200 via Web Bluetooth. Weight appears in real-time as the athlete steps on. Once stable, it's automatically locked in - no manual entry, no transcription errors.
Real-Time Weight Validation
Every competitor is registered with one or more weight categories. The moment a weight is entered - manually or via Bluetooth - the system instantly shows whether the athlete passes, is overweight, or underweight. Color-coded indicators make status unmistakable at a glance.
Instant Receipt Printing
Print an official weigh-in receipt with one click. Supports standard printers (via browser) and thermal receipt printers (via ESC/POS over Web Serial). Each receipt includes event name, competitor details, measured weight, pass/fail status, and a timestamp.
Lightning-Fast Competitor Lookup
Find any competitor among hundreds in milliseconds. Full-text search with fuzzy matching handles misspelled names, partial queries, and transliteration differences. Navigate entirely by keyboard - no mouse needed.
Passport / ID Scanning (MRZ)
For international events, press F3 to activate the camera and scan the Machine Readable Zone on a passport or ID card. The system extracts the athlete's name and finds their record automatically. One scan, one match, zero typing.
Live Dashboard & Statistics
The toolbar shows real-time progress - how many competitors have been weighed, how many are overweight or underweight, and overall completion percentage. Filter by gender for separate weigh-in sessions.
How It Works
Type a name or scan a passport
Athlete steps on the Bluetooth scale (or enter weight manually)
Instant pass/fail shown for all categories
One click prints the official receipt
Move to the next competitor
Before vs. With Sportviz Toolkit
Sportviz Toolkit - Because weigh-ins should take minutes, not hours.
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