CODEWITHSUNDEEP
windows-store-appswinjs
user1733839
user1733839

Reputation: 13

ASHWID: How to determine the components to store as the unique ID

As per the reference help in

http://msdn.microsoft.com/en-us/library/windows/apps/jj553431.aspx

Below is a simple illustration for just one way you can handle hardware drift within the cloud service: 

If [(Component_1_previous == Component_1_current) x Weight_1 + 
(Component_2_previous == Component_2_current) x Weight_2 + 
(Component_3_previous == Component_3_current) x Weight_3 + ……..
(Component_n_previous == Component_n_current) x Weight_n]>= [Threshold_for_being_the_same_device]
Then It_is_the_same_device

Using relative weights in device identification

Relative weights depend on your business logic and what you determine to be an acceptable hardware drift. No explicit recommendations are made for the value of the weights. Some components are less likely to vary than others and deserve higher weights. For example, the BIOS is less likely to change than the audio adapter. Multiple disk drives may show up depending on the number of drives connected to the system. The component ID for the drive that the OS is installed on is less likely to change. The processor component ID on most x86/x86-64 systems is pretty stable. If you find that the docking station component returns the same component ID, it would make sense to assign a zero weight to it.

How do we actually determine the which components to be used. How can this be programmatically achieved. Is there a sample for this? I want to use this as id as the unique id for the device where the app is being installed irrespective of which user is being logged in the device.

Upvotes: 0

Views: 362

Answers (1)

satur9nine
satur9nine

Reputation: 15072

These samples might help:

http://code.msdn.microsoft.com/windowsapps/How-to-use-ASHWID-to-3742c83e http://code.msdn.microsoft.com/windowsapps/Generate-UniqueID-based-on-4aeeabde

I have to say that I don't understand why Microsoft makes getting a a unique ID for an OS installation so complicated.

Upvotes: 1

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