Visitor identification

How do we manage visitor identification

What is visitor identification

Visitor identification is the basis of all calculations in Analytics.

Without a perfect management of this identifier, and a real persistence, we would not be able to calculate an exact number of visits and visitors.

This visitor identifier, present on all the events we collect, is personal data. More information is available in our Privacy Center.

How it works

Javascript

The visitor identification is created the first time you use a pa.sendEvent() / pa.sendEvents() method.

The information is first stored in a cookie, and then sent to all future events into a query parameter.

Cookie	Querystring parameter	Format	SDK version
pa_vid	idclient	GUID	< 6.7.0
_pcid	idclient	16 char.	>= 6.7.0

The visitor ID must be 16 or 36 characters long.

Apple

The visitor identification is created the first time you use a pa.sendEvent() / pa.sendEvents() method.

Here is the decision tree leading to the output depending on configurations:

HTTP

The management of the visitor identification is delegated to you when you use our Collection API.

Please, note that a break in the identifier will create a new visit and the detection of a new visitor.

A GUID format is recommended.

caution

As the visitor identification is a key notion in Analytics (visits, visitors, ...), we recommend that you do not change our SDKs behavior regarding its management.

Legacy visitor management

More information about legacy visitor management in our Cookies & storage article.

Visitor identification configuration

You can configure the visitor identifier to suit your needs.

Javascript

Visitor identification behaviour you can modify:

Name	Description	Type	Value
storageLifetimeVisitor	Lifetime Storage Visitor value	int	395 (days)
visitorStorageMode	Relative or fixed cookie lifetime value for visitor	string	fixed (default), relative
isVisitorClientSide	Is cookie deposit client side ? If false, server side	boolean	true (default), false

To setup the configuration, please consult our Javascript SDK article.

Android

Visitor identification behavior you can modify:

Name	Description	Type	Value
storageLifetimeVisitor	Lifetime Storage Visitor value	int	395 (days)
visitorStorageMode	Relative or fixed cookie lifetime value for visitor	string	fixed (default), relative
ignoreLimitedAdvertisingTracking	Whether the SDK should ignore (true) or not (false) the end-user choice to limit ad tracking.	boolean	true, false (default)
visitorIdType	Visitor ID type	string	uuid (default), androidId, advertisingId, googleAdvertisingId, huaweiOpenAdvertisingId , custom
visitorId	Custom visitor ID	string	39001HUFEKK977894

To setup the configuration, please consult our Android SDK article.

Apple

Visitor identification behavior you can modify:

Name	Description	Type	Value
storageLifetimeVisitor	Lifetime Storage Visitor value	int	395 (days)
visitorStorageMode	Relative or fixed cookie lifetime value for visitor	string	fixed (default), relative
ignoreLimitedAdvertisingTracking	Whether the SDK should ignore (true) or not (false) the end-user choice to limit ad tracking.	boolean	true, false (default)
visitorIdType	Visitor ID type	string	uuid (default), idfa, idfv, custom
visitorId	Custom visitor ID	string	39001HUFEKK977894

To setup the configuration, please consult our Apple SDK article.

HTTP

When using the Collection API, you manage the visitor identifier.

Visitor identification management

In some specific cases, it can be useful to manage the visitor identifier yourself.

We provide you with dedicated methods for that matter.

Javascript

Method:

pa.setVisitorId(visitorId)

Parameter	Type	Description	Format
visitorId	string	Visitor identifier	GUID or 16 char. long

pa.setVisitorId('97c7db4e-4514-4b8e-b693-bd6b57043cc1');

You can also retrieve the visitor ID with a dedicated method. This can be useful to synchronize an ID between native and webviews.

Method:

pa.getVisitorId()

const PAVisitorId = pa.getVisitorId();

Android

Method:

func PianoAnalytics.setVisitorId(_ visitorId: String) -> void

Parameter	Type	Description
visitorId	String	Visitor identifier (GUID recommended)

pa.setVisitorId("97c7db4e-4514-4b8e-b693-bd6b57043cc1")

You can also retrieve the visitor ID with a dedicated method. This can be useful to synchronize an ID between native and webviews.

Method:

func PianoAnalytics.getVisitorId(PianoAnalytics.OnGetVisitorIdListener) -> void

pa.getVisitorId(visitorId -> {
  // visitorId fetched
});

Apple

Method:

pa.setVisitorId(_ visitorId: String)

Parameter	Type	Description
visitorId	String	Visitor identifier (GUID recommended)

pa.setVisitorId("97c7db4e-4514-4b8e-b693-bd6b57043cc1")

You can also retrieve the visitor ID with a dedicated method. This can be useful to synchronize an ID between native and webviews.

Method:

pa.getVisitorId(completionHandler: ((_ visitorId: String) -> Void)?)

pa.getVisitorId { visitorId in
  print(visitorId)
}

HTTP

When using the Collection API, you have to feed the visitor identifier directly into the idclient querystring parameter.