Android Question Play Store & distribution

[luke2012]

My target is to let (only) users that I have selected to download my app.

My requirements are:

1) Only the selected users that have purchased my digital product (application) can download and install the app.
2) I wish to generate a QR-CODE that open the play-store url (there are some apps that generate it)

I known that the simpler way to let a user install an Android App to his smartphone is to put it on the play store.
But free download apps on play store can be reached from all play store users without any control over the download.

So my question is: how to let only the customers (play store users) that are elegible to install and download the App ?

Thanks in advance for your reply.

 

[An Schi]

You can make a closed beta in google play. You will need to add the emails (play accounts) of those who are allowed to download the app.

 

[Cableguy]

If an app is not free, then the user becomes a customer and must first pay for the app before download. So if you do not make a free version of the app, you have some degree of control...