For example, I have an app I don't want to let people use casually, registration code or activation code or the period of validity of a few what to need, how to implement such technology system? Related experience tutorial or solution for learning? Thank you very much!!!!!

CodePudding user response:

In to the mobile terminal, should be to create a membership system? Can top-up, prepaid phone to use? Registration code that is software is a tool of the nature of will to do so

CodePudding user response:

User system can also use, mobile phone number to send verification code, can be used after a successful login

CodePudding user response:

Is similar to token, concrete implementation don't know, not doing a backend

CodePudding user response:

Have to receive the verification code platform, as long as the introduction of their third party libraries can, quite simple

CodePudding user response:

Background to discuss the username to distinguish can directly, and ordinary tip without permission to login