This is a bit specific but let's say :
I just got a thousand of tablets. I want to install my app on these ones only.
I want nobody else to have the app and I want updates to be as smooth as possible.
I would also like to avoid using a third party server as it's more work and it might not even be possible (I don't think there's an Android permission allowing to delete and install apps on a device).
Is there a faster way than manually creating a gmail adress for every single one of them and restrict publishing to a google+ group that all these accounts are subscribed to ?
Is there any kind of script or option to have this done ? My googling was resultless so far.
In short how to manage update for a single purpose app ?
EDIT : I've found this : https://developer.android.com/work/cosu.html#locktask but no update feature is mentionned
EDIT 2 : I believe it is a pertinent question as it's unanswered here : Update Android app in COSU device
EDIT 3 : I've found the "google private channel" but it doesn't seem to quite answer the problematics I face yet