The Chalker Has Eyes Now

NewTon DC Tournament Manager v5.0.0-beta.2 — March 24, 2026

Overview

NewTon DC Tournament Manager Version 5.0.0-beta.2 completes the first full QR handshake: the Chalker can now scan the assignment QR generated by the Tournament Manager. Tap QR, point the camera, confirm the details, start the match. No typing, no mistakes, no wasted time at the oche.

QR Scanning in the Chalker

QR Button in "New Match?" Dialog

A QR button has been added to the Chalker's New Match dialog, between "New Match" and "Network". It appears in both states — idle and after a completed match.

Camera Opens Immediately

Tap QR and the camera is live. No intermediate screen, no extra confirmation. BarcodeDetector API scans continuously — the moment a valid NewTon QR is in frame, it's captured automatically.

CRC-32 Verification

Every scan is verified with the same CRC-32 module (newton-integrity.js) used by the Tournament Manager to sign the payload. Corrupted or tampered codes are rejected before any data is accepted.

Confirmation Screen

After a successful scan, a confirmation screen shows everything from the payload:

Player 1 vs Player 2
x01 format, best-of legs, max rounds
Lane and referee

The operator confirms before the match starts. Catches wrong-match scans before a dart is thrown.

Starting Player → Match

After confirmation, the standard starting player selection appears — the same flow as a manually configured match. Everything from the QR payload populates the match state, including lane (shown in the info bar throughout the match).

Error Handling

Situation	Behaviour
Wrong QR type	Error shown in scan modal, camera stays open
CRC mismatch	Error shown, camera stays open
Camera permission denied	Clear message in scan modal
Unsupported browser	"Not supported" message — no camera attempt

The camera stays open on failure so the operator can try again without re-tapping QR.

Files Changed

js/main.js — version bump to 5.0.0-beta.2
chalker/index.html — QR button in New Match dialog; #qr-scan-modal and #qr-confirm-modal markup; newton-integrity.js script tag
chalker/js/chalker.js — QR scanning functions, confirmation flow, event listeners
chalker/js/newton-integrity.js — new file, identical copy of TM CRC-32 module
chalker/styles/chalker.css — camera modal and confirmation modal styles
chalker/sw.js — newton-integrity.js added to offline cache; version chalker-v96
Docs/QR.md — decisions updated: QR and Network are separate buttons

Migration from v5.0.0-beta.1

No migration required. Fully compatible with all existing tournaments and saved configurations.

NewTon DC Tournament Manager v5.0.0-beta.2 — It saw the QR. It believed. It started the match.

Download v5.0.0-beta.2

Previous Releases

Latest release
v5.0.0-beta.1 — March 22, 2026 — Your Boarding Pass for the Oche.
v4.2.13 — March 20, 2026 — A+ Security Headers. Yes, Really.
v4.2.12 — March 19, 2026 — Dedicated domain: newtondarts.com.
v4.2.11 — March 18, 2026 — Shame has never looked better.
v4.2.10 — March 17, 2026 — Doc pages, user guide, and sitemap improvements.
v4.2.9 — March 15, 2026 — Landing page polish.
v4.2.8 — March 13, 2026 — Late Registration.
v4.2.7 — March 13, 2026 — Sitemap, font loading fix, and Get Started section.
v4.2.6 — March 12, 2026 — Undo system bug fix, Late Registration eligibility checker, and robots.txt.
v4.2.5 — March 11, 2026 — Landing page improvements and a Bracket Editor placeholder in the Developer Console.
v4.2.4 — March 10, 2026 — Proper Single Elimination match length configuration and colour-coded Chalker leg averages.
v4.2.3 — March 10, 2026 — Landing page redesign with retro comic theme by Nano Banana.
v4.2.2 — March 9, 2026 — Landing page fix, cleaner card layout.
v4.2.1 — March 8, 2026 — Cleaner cards, clearer brackets, better discoverability.
v4.2.0 — March 3, 2026 — Single Elimination: one shot, no second chances.

For older releases, see the GitHub releases page.