Two reader-hardening changes born from the park-buzi phantom-scan investigation
(empty pre-opening site, exit reader pushing sun-decoded garbage codes).
1. CHANNEL TAGGING — closes the printed-card-clone hole. The DT-008 push is
channel-blind (one opaque cardid from either engine) and SubscriptionFlow
matched by value only, so printing an RF card's UID (often written on the
card face, e.g. 86A158) as a barcode cloned the card. Now:
- Vendor tool sets output prefixes (QRCode "Q:", Card "K:"; server env
overrides READER_QR_PREFIX / READER_CARD_PREFIX).
- routes/qr-reader.ts strips the prefix and tags the read's confirmed
channel (DeviceReadEvent.channel optical|rf; kind qr|card). Enrollment
capture stores the BARE value. READ log lines carry ch=… (permanent
phantom attribution).
- SubscriptionFlow.match requires channel agreement: an optical decode may
not claim an rf credential (and vice versa) — refused + signed
sub.refused.channelMismatch anomaly (a clone attempt is a fraud signal).
- Unprefixed reads keep the legacy untagged shape and match as before, so
enforcement only bites where prefixes are deployed. Deploy server FIRST,
then set prefixes in the vendor tool.
2. STRUCTURAL FILTER — phantom decodes out of the signed feed (operator-
requested, reverses the earlier "record every probe" position — red
"who is exiting?" rows for NOBODY train the operator to ignore the feed).
read-dispatch.ts drops a no-match reader value that cannot possibly be a
credential we issue (no ticket Luhn shape, no SUB-/SUBSESS- prefix, not
confirmed-RF, not a plate) to UNSIGNED device_events telemetry
(unrecognizedRead:true). Deliberately WIDE plausibility: forged ticket
shapes, unknown physical cards, unknown SUB- codes all still sign the
normal refusal anomaly; enrolled credentials match before the filter and
can never be hidden. Works for legacy unprefixed reads too — the feed
cleans up on deploy, before any vendor-tool change.
Wiki: dingtian-dt008-reader.md records the clone hole + fix, the filter (as a
recorded position reversal), and the two device-side settings now part of the
credential contract (output prefixes + Card Input format, moving 6H→8H at the
next vendor-tool session; both live ON the device — re-apply after any
factory reset/swap).
Tests: qr-reader-channel.test.ts (prefix split, route tagging, bare-value
capture), subscription-channel.test.ts (channel agreement matrix + anomaly),
read-dispatch-filter.test.ts (filter boundary: phantoms dropped, probes kept,
enrolled never hidden). Suite 278 green.
Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V
An early wrong assumption named the QR/RFID access reader "GEE" /
"GEE/Fondvision" / "GEE-QR-ER80" (and summarized a raw GEE PDF as its
datasheet). There is no GEE device — it's the Dingtian DT-008
(dingtian-tech.com/en_us/qr_code_reader.html), the same vendor as the relay
board, which is why it integrates the identical HTTP-GET-push way.
Code:
- Driver symbol geeQrReaderDriver → dingtianQrReaderDriver; label →
"Dingtian DT-008 QR/RFID reader (HTTP push)"; comments/description rewritten
to the real DT-008 facts (Wiegand 26/34, TCP/IP, USB, RS485 — not RS-232;
QR/barcode + ID/IC/NFC — not DataMatrix/1D).
- Persisted driverId "gee-qr-reader" → "dingtian-qr-reader" (the registry
lookup key + the row created on assign in qr-reader.ts).
- Migration 0015 rewrites existing devices.driver_id rows so configured readers
keep resolving (applied to the dev DB — 2 rows; the booth applies it on boot).
Behaviour is unchanged: naming + the persisted id only.
Wiki + memory:
- Renamed entities/gee-qr-er80.md → dingtian-dt008-reader.md and
sources/gee-qr-er80.md → dingtian-dt008.md; rewrote both to the real DT-008
product-page specs while KEEPING all the verified-on-hardware protocol facts
(cjihao serial, .jsp path, Connection: close). Fixed every cross-reference +
"GEE" mention in 6 other pages. Memory gee-reader-serial-binding →
dingtian-reader-serial-binding. The only surviving "GEE" mentions are
deliberate naming-correction notes, the raw PDF filename, and the
append-only log history.
Full workspace build/lint/test green; dev DB readers verified resolving to the
registered dingtian-qr-reader driver.
Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V
Rounds out subscriptions across enrollment, the barrier flow, and the booth.
- RFID credentials enabled with a "Read card" enrollment flow: the operator
arms ONE chosen reader (CredentialCapture, single-shot + ~30s TTL); that
reader's next read is captured into the form and NOT dispatched to the access
flow — the OTHER reader keeps serving live entry/exit. Routes:
/api/subscriptions/readers + /capture/{arm,cancel} + poll.
- Enter with one credential, exit with another: sessions are keyed by a
per-occurrence id (SUBSESS-<short>), not the credential value, with
permitId in the payload. Direction is decided by the barrier the reader sits
at (entry-lane→entry, exit-lane→exit; "both" infers); a fleet (maxConcurrent>1)
admits several cars and exits any with any credential, FIFO (oldest first).
- Booth treats a subscription occurrence as PREPAID: never quoted/charged; the
pay/exit modal shows a subscription mode (snapshots + a single audited
Open-barrier action) to assist a faulty exit reader / missing card;
reopenBarrier authorizes paidAt!=null OR subscription. Active Sessions badges
"abonim" and labels by holder name (not the raw key).
- Plus a per-read diagnostic log in the QR-reader route (serial → device →
verdict/dir), which surfaced the earlier duplicate-reader-IP misroute.
Verified via buildServer+inject + reader-scan/TCP-capture simulations
(enrollment isolation, cross-credential + FIFO fleet, prepaid-not-charged,
subscription reopen, unpaid-transient guard). Updated wiki (subscription,
booth-exit-flow). No migration.
Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V
A parking lot is one pool of spaces with a flexible set of entry/exit
points — no "lane". Direction is a property of each RELAY inside an access
controller; readers/cameras bind to a controller relay and inherit it.
Schema:
- drop `lane` from ledger_events, device_events, sessions
- rename lane_devices -> devices (no lane/direction columns)
- access config.relays=[{relay,direction,button?}]; reader/camera
config.controllerId+relay binding
- fresh 0000_baseline migration (history reset; dev data was throwaway)
Signed ledger:
- remove `lane` from canonicalize(); bump signer keyId sw-hmac-v1 -> v2
(v1 events won't verify under v2 — intentional, gated per-event by keyId)
Server:
- new device-resolve.ts (replaces lane-map.ts): relayForButton,
relayForDevice, firstRelayByDirection, devicesByDirection
- entry-flow: button terminal -> its relay; exit/permit: reader's bound
relay; dispatcher resolves the bound relay + inherited direction
- camera snapshots fire by direction site-wide, async, never block open
- DeviceConfig widened to nested JSON for relays[]
Web:
- wizard: no lane selector; add controllers (relay map + entry-button
terminal) first, then bind readers/cameras/printers to a controller relay
Wiki: new entry-exit-points.md (replaces lane-direction); reworked
entry-exit-readers, parking-session, first-run-setup, device-registry,
append-only-event-chain, device-events; removed stale lane/LaneMap mentions.
The reader sends Connection: keep-alive but only acts on the verdict (beep,
output) once the TCP socket closes. Fastify's default kept the connection alive,
so the reader waited out a ~10s keep-alive timeout before beeping — even though
the server replied in ~15ms. Every vendor demo replies Connection: close and
shuts the socket. Set reply.header('connection','close') on the QR endpoint.
Verified the header is now sent; symptom was correct accept/reject with a ~10s
lag before the beep.
The QR reader is a push device and the setup wizard assigns random-UUID ids, so
'id = serial' can't be set via the UI. Add a dedicated gee-qr-reader driver
(reader category) with a single 'serial' config field; the admin assigns it
normally and enters the device's serial (its cjihao).
The QR endpoint now resolves the lane by matching lane_devices.config.serial to
the scan's cjihao (instead of row id == cjihao), so no DB hand-editing. An
unassigned serial resolves to no lane -> status:0, gracefully.
Verified via inject through the real /api/setup/assign: assign {serial:
H05M2AFA} -> .jsp scan with a matching permit QR -> status:1 (accept) + open;
re-scan -> permit exit; unknown card -> status:0; unassigned serial -> status:0.
Hardware capture: the GEE/Fondvision reader (serial H05M2AFA) scans + sends +
beeps fine — the earlier 'no beep' was just nothing answering :3000. Real
request: GET /qa/mcardsea.jsp?cardid=...&cjihao=H05M2AFA&... — the 'server
language' setting (JSP here) selects the URL EXTENSION, so it posts .jsp, not
.php. Our route was .php-only and would have 404'd it.
Register the endpoint at php/jsp/asp/aspx/cgi so it works whatever the device is
configured to. cjihao (serial) is the lane key: assign the reader as
lane_devices.id = its serial.
The reader HTTP-GETs on each scan and beeps/acts on our JSON reply (host-in-the-
loop, synchronous). New route GET/POST /qa/mcardsea.php parses the SDK query,
runs the scan through the read dispatcher (permit match -> permit flow; else
transient exit), and replies the SDK verdict: status 1=valid (beep 2x) /
0=invalid (beep 1x), output, time-sync.
Refactored the read flows to return a ReadOutcome {accepted, direction, reason}
so the reply reflects the real accept/reject decision (ReadDispatcher.dispatch,
ExitFlow.handleAt, PermitFlow.run). Fire-and-forget readers ignore it.
Reader's lane is keyed off its serial (cjihao) as lane_devices.id for now;
endpoint is public (reader has no auth, on the device subnet).
Verified via inject: valid permit QR -> status:1 + open; re-scan -> permit exit;
unknown QR -> status:0; barrier-less lane -> status:0.
julian