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?
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();
Mobile ID API should work, but there will be permission dialog for the user
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/