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# Class UserIdentification

Information about how to identify the anybill user. Only one value should be set. If multiple values are set only the first according to the priority is used, wheres priority 1 is the highest possible priority.

##### Inheritance

System.Object
UserIdentification

###### Namespace: anybill.POS.Client.Models.User

###### Assembly: anybill.POS.Client.Abstractions.dll

##### Syntax

    public class UserIdentification

### Properties

#### ExternalId

Id of the user in an external customer system. Priority: 3

##### Declaration

    public string ExternalId { get; set; }

##### Property Value

Type | Description
--- | ---
System.String |

#### LoyaltyCardBarcode

The barcode of the loyalty card of the customer that is linked to the anybill user. Priority: 2

##### Declaration

    public string LoyaltyCardBarcode { get; set; }

##### Property Value

Type | Description
--- | ---
System.String |

#### UserId

The id of the anybill user. Priority: 1

##### Declaration

    public Guid? UserId { get; set; }

##### Property Value

Type | Description
--- | ---
System.Nullable<System.Guid> |