# Check-in ### What is a check-in? A check in resembles the collection of personal data within a reservation. In some countries, cities or Provence's it is mandatory to collect personal information regarding your guests. With a check-in you an collect data from your guests, at the moment they join the reservation. This process is managed by the [Brand check-in settings](/the-basics/brands/check-in.md). ### Check your local authorities if guest registration is applicable to you. Wether your are required to collect personal information, that depends on your location and jurisdiction. In some countries , like Spain, you are required to do so. We always recommend to consult your local authorities to check what information is required. ### What information can be collected during the check-in? Depending your local authorities or your own requirements you can collect guest information of single guest or all guests with a reservation. Find an overview of possible information below:

Label	Information
`First Name`	The first name of the guest, if this information is know, the field will be pre-filled.
`Last Name`	The last name of the guest, if this information is know, the field will be pre-filled.
`Email`	The email of the guest, if this information is know, the field will be pre-filled.
`Phone`	The phone of the guest, if this information is know, the field will be pre-filled.
`Address`	The address field consists of multiple inputs. Based on our localisation we provide the following data: - Line 1 - Line 2 - Postal code - City - Region - Country - Latitude - Longitude
`Gender`	We can asked for internationally recognised gender formats.
`Date of birth`	The date of birth of the guest.
`Document Type`	If documents are required, we can ask for international accepted documents. Based on the location of the listing we adapt the list of required documents. We offer: - Driving License - ID-Card - NIE - Passport
`Document Number`	The official document number of the guest associated with the selected document type.
`Document Expiry Date`	The expiry date of the selected document type
`Document Issue Date`	The issue date of the selected document type
`Document Image`	If required, guests can upload a document image. Such images are securely stored on our own CDN and can be removed based upon your preference.
`Flight Number`	Guests can be asked to provide their flight number. This field will always be optional.

### Interests and Budget If you would like to collect more information about your guests, you can ask them to provide their interests and budget. These settings are separated from the check-in forms and will be asked to every user.

The interest and budget are based on a user. And they are accumulated on the reservation itself. ### Reservation Behaviour Depending on the region, you may need to collect information about all or a single guest. HolidayHero is able to work in with both scenario's. | Behavior | Guest Interaction | | ---------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------- | | `One guest needs to be checked In` | Once a single guest has checked in, the reservation status will switch to checked in. | | `All guests need to be check in` | The amount of checkins should match the total number of guests (adults + children + babies) before a reservation switches state to check in |

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