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Mirroring or duplicate PlayerPrefs to imitate another player
Hi Folks,
i have a game that generates an unique ID for the device identification the first time the player starts the game. This ID is stored encrypted together with other progress information and a checksum.
I have to make sure, that progress is only possible on this particular device for monetarization reasons. The game receives data via offline file transfer and this data package can only be opened by the particular unique ID/device.
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To abuse this, some evildoer may change the playprefs on his/hers device to match the ones on another device (aka copy paste each entry).
Thus allowing progress / data processing on both cuz the checksum doesnt fire and encryption is still valid.
I read, that SystemInfo.deviceUniqueIdentifier requieres some weird permissions on Android so i came to this solution. .
How can i prevent that ? Its has to be offline, and require no further login.
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