For all the serious cash poured into preventing software piracy through security programs and increasingly complicated DRM, sometimes the simplest methods can be the most effective.

For all the serious cash poured into preventing software piracy through security programs and increasingly complicated DRM, sometimes the simplest methods can be the most effective. Just ask anyone who found themselves recently unable to use a game called Garry's Mod.

Garry Newman, the creator of the sandbox-style physics game, deliberately enabled an error a few days ago which was designed to only affect people using an unlicensed copy of the game. The bug would cause the game to crash along with a message, stating, “Engine Error:Unable to shade polygon normals(##########).” The numbers in parentheses would actually be the user's 64-bit SteamID, which identifies them on the game's main distribution platform, Steam.

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