Get(PersistentID)
 
Purpose 
Returns text representing a unique identifier of the computer or device running FileMaker.
Format 
Get(PersistentID)
Parameters 
None
Data type returned 
text
Originated in 
FileMaker Pro 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 solution.
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 backup to a different device, the value returned by Get(PersistentID) changes. If a backup is restored to the same iOS device, the returned value remains the same. For more information, see the FileMaker Knowledge Base.
 •
For information on how functions evaluate differently on the host versus the client, search the FileMaker Knowledge Base available at http://help.filemaker.com.
Examples 
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
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