The idiom 'check me' is telling someone to check you out or see what you're doing or going to do. Example: Yeah, check me. It can also mean call me or get in touch with me. Example: Check me soon if you want to go see that movie together. It can also mean goodbye. Example: Check you later!

Check me means "check my background or identity ! "

Hello Ken, Without the context it is difficult to tell you what does it mean...

well it could mean any number of things , but i'm going to say it means to contact me , call me, as if I would say to you" check me out" or to keep in touch, American english unfortunately has many , many meanings to the same word or phrase, it can be quite confusing at times, even for a native english speaker.