Less Typing. Faster Check-In.
Guests photograph their passport or ID document and Sincro tries to automatically fill in the possible data in the form. Guests confirm or correct it before continuing — nothing is ever shown as confirmed without that step.
How It Works
Four steps, on the guest's side, with no extra setup for the host.
Opens the Check-in Form
The guest accesses the property's form, on their phone or computer.
Photographs the Document (Front and Back)
Takes a photo of the front and back of their passport or ID card.
Sincro Reads the Possible Data
The system tries to automatically fill in the document's fields, directly on the guest's device.
The Guest Confirms or Corrects
The filled-in fields can always be reviewed and corrected before continuing the form.
What Makes This Reading Reliable
It's not guesswork: the main fields are mathematically validated before being filled in.
The main document fields are automatically pre-filled, one at a time.
Document number, date of birth and expiry date are confirmed using the machine-readable zone's official check digit — the same mechanism used at airports.
Extracted data can always be confirmed or corrected before submitting the form. Nothing is sent without this step.
Reading happens on the guest's own phone or computer — the image is never sent to an external text-recognition service.
What Can Be Filled In Automatically
- First and last name (when reading confidence is high enough)
- Date of birth
- Document number
- Nationality
- Document type (passport or ID card)
- Exact address/residence (suggested from nationality, always editable)
- Stay dates
- Extra fields configured by the host
- Any field read with low confidence (left blank on purpose)
Each field is only filled in when there is enough confidence in the reading. It works with passports and ID cards that have a machine-readable zone (MRZ) — covering the vast majority of documents issued today. Without that zone, the form still works normally with manual entry.
Manual vs. With Automatic Scanning
| Aspect | Manual Entry | With Automatic Scanning |
|---|---|---|
| Time to fill in document data | 1-2 minutes | A few seconds |
| Fields the guest has to type | All of them | Only the ones not read with confidence |
| Transcription errors | Common | Reduced on check-digit-validated fields |
| Filling in on a small screen (phone) | Slower | Faster |
Reading the document happens directly on the guest's device — the image is never sent to an external text-recognition service. Only the final image (already watermarked) is stored, for the same retention period as the guest's other data.
See our Privacy PolicyReady to Simplify Your Guests' Check-In?
Create your first form for free and try automatic document scanning.