When Flutter project bubble in the real machine, xocde prompted keys keychain codesign want to visit you in

codesign want to access keys in your keychain

 

This is the first time the developer's words, to be acknowledged, so you need to enter, but not to the Internet to find a lot of ways he suggests, can not

Back to find that this is actually a password administrator login password is your basic power-on password

So you enter the next power-on password, the basic can be friends