Unique device identification for KaiOS featured phones

Question

I am trying to find unique device identification in KaiOS featured phones such as Jio Phone. I am developing an app for featured phone using plain JavaScript and need to uniquely identify each mobile device, I am unable to find any solution for this.

Can anyone suggest any solution for the above problem?

Answer 1

You can use the device UUID as a unique identification number. It will be the same even when the app uninstalls and reinstall again.

Get UUID using the below code.

var uuid = new DeviceUUID().get();

Here is the full code of DeviceUUID

Library link

Answer 2

Mobile ID API should work, but there will be permission dialog for the user

https://wiki.mozilla.org/WebAPI/MobileIdentity

Answer 3

With caveat that with every reinstall of app, this number will change, you can generate a random uuid(https://www.npmjs.com/package/uuid) and store it in localstorage/idb.

this also wont need any permissions.

you can also use canvas fingerprinting without above issue or permission needs https://www.andreafortuna.org/2017/11/06/what-is-canvas-fingerprinting-and-how-the-companies-use-it-to-track-you-online/