I have on app who was write in cordova. I want to make fingerprint with users data to track installs. At click, we make a hash. If this hash it is equal with hash from install.. it is ok and count + 1 at install. I tried with ip...lat..lng..., but ip is changing from mobile network and hash from click is not equal with hash from install. I also tried with client js (but user agent is different because I use in cordova InAppBrowser plugin who uses WebView). And resolution sometimes is different.. depend of which browser it was used I think.
What can I use to make fingerprint unique?
What do you think about Wifi MAC address + info about devices present in this class (ID, brand, version, ...): https://developer.android.com/reference/android/os/Build