How to track unique user ID with mobile app SDK

[pe...@wearefaer.com]

Hello,

There's a lack of documentation about how the default events are triggered by the Android and iOS Firebase analytics SDKs, so I'm turning to you for help.

I need a unique user ID so I can track app usage metrics, but I'm having trouble. I've been using this support answer as reference.

Here are my options:

- `device.advertising_id`: may not always be there, I get it;

- `device.vendor_id`: I'd expect this to always be present, but it is very often NULL, why?

- `user_pseudo_id`: what is this? can I use this as a unique user ID? is it reset on reinstall/update?

Thank you,

Pedro

[Ian Barber]

vendor_id - users can disable some ad tracking in iOS, wont be present for Android users. 

user_pseudo_id is reset on reinstall.

 The most reliable option would be to set a user ID as a user property, if users are signing in to your app. 

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Keng356

ในวันที่ ส. 1 ก.ย. 2018 22:09 น. <pe...@wearefaer.com> เขียนว่า:

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