Reference flow
Every step below is the same record, seen by a different person. That is the whole idea — no re-entry, no lost token, no phone call to the basement.
Drop-off
A phone camera reads the number plate and mints the QR thread on the spot — no paper token, no scribbled sheet.
The thread
The same code lands on WhatsApp. Everything that happens next — bags, room, charges — hangs off it.
Check-in
One scan links the car and the bag count to the room, so the thread now knows guest, room, car and luggage.
In-house spend
Staff scan the same QR to attach a charge. Nothing gets reconciled by hand at midnight.
Retrieval
The request joins a queue, the nearest valet is dispatched, and the guest watches a countdown instead of waiting on the kerb.
Handover
Arriving cars are listed like departures, bags are reconciled, and the bill is settled once.
FASTag / RFID
Identity at the gate, using the tag the car already carries.
Camera / ANPR
Reads plates where a tag read fails.
BLE zones
Rough location deep inside basements where GPS dies.
Valet slot log
The always-available fallback — a human-confirmed bay.