Use this tag for questions related to memory editing; involves modifying the memory values.
memory-editing is used in its general concept, varying from questions regarding injections, writing to other processes's memory and such, to game cheating: Quoting Wikipedia:
Cheating via memory editing involves modifying the memory values where the game keeps its status information. The way to achieve this will vary depending on the environment in which the game is running.
Notice that this can happen via software or hardware, but only software questions are on topic for StackOverflow.