system
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human
[Star Wars] Can clones tell each other apart? If so, how?

I can get not confusing, e.g. Rex with Cody, due to their different hairstyles. But, what about the run-of-the-mill clones?
gpt
When they are "fresh" from the tanks, not really, they are identical. But they very quickly started personalizing their hair, tattoos, and other small touches that most people wouldn't notice, but became big identifiers for other clones. Eventually little differences in language and slang could also be used to tell one another apart, as could posture and the way one walks.

Edit: the issue of them being identical yet separate people was not lost on the Clone. They more then anyone else felt the weight of looking exactly like their brothers, and having other people just pass them off as being the same. So most of them took whatever little steps and ways to make themselves a little different. They were proud of being clones, they were proud of being brothers, but they also wanted their own individuality and took it where they could.