[ @_insidious ]
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I think it's the best to use traditional passworded script. You can create some algorithm that will match password and the generated hash, you can then log them if the key is already used. Well that's not answering the question, but you can utilize any unique ID stored. Here's my thoughts:
If the script is targetting some specific games, you can grab in-game unique ID by scanning them directly on the Memory (since accessing shell is restricted in newer version of Android), if the result exist atleast one, the script can continue. For example in Minecraft, in-game character have unique identifier bounds to Xbox Live account, usually it's patterned like this: minecraft:player.0.[uuid-here]
You can also utilize Game Guardian random package naming. Each installation, Game Guardian will re-install itself with random package name to avoid Game detection. You can somehow use this with pattern search: com.[length-string], etc.
I don't have Android 12+ since I'm already getting comfortable in Android 10, but each process sits under /proc. Theoretically, you can get information from /proc/cpuinfo, which then you can find any Unique ID in there (or atleast anything from /proc).
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