Reference > Functions reference > Get functions > Get(PersistentID)
 

Get(PersistentID)

Returns text representing a unique identifier of the computer or device running a FileMaker client.

Format 

Get ( PersistentID )

Parameters 

None

Data type returned 

text

Originated in version 

12.0

Description 

Returns a unique, unchanging identifier for the computer on which FileMaker Pro is running, the device on which FileMaker Go is running, or the current FileMaker WebDirect session in the form of a 32-digit hexadecimal string. Get(PersistentID) helps you identify devices that access your custom app.

Notes 

If web browser cookies are cleared during a FileMaker WebDirect session, the value returned by Get(PersistentID) changes.

If a FileMaker Go user restores an iOS or iPadOS backup to a different device, the value returned by Get(PersistentID) changes. If a backup is restored to the same device, the returned value remains the same. For more information, see the Knowledge Base.

Example 1 

For a FileMaker Pro client or a FileMaker Go client, Get(PersistentID) returns a value such as 78569d0bd40b898a64e7d08ccdea8220.

Related topics 

Functions reference (category list)

Functions reference (alphabetical list)

About formulas

About functions

Defining calculation fields

Using operators in formulas