How to create log in page and sign up page connected to each other and They can also log in to the program using the Google account
I am working on the same you can set up a registration page send the registration data to a spreadsheet and then you can apply login based on one primary key that is also your foreign key to verify login.
I am working on SSO but its a tuf nut once your app is life then you can go Ahead and add SSO
General methodology A login template by eiXerITS
Google Sheets Login page using google sheets
or search this community for log in page.
I could not understand this is there another way or a file.aia
What couldn't you understand? The login template has a link to an AI2 aia. Did you try the example?
Using a Google account to 'log in to an app' is complex and an advanced topic..use the second link advice. Yes the advice is complex. Other methods to 'log-in' (a password etc. are less secure but might be sufficient for your app).
Here are other (untested) examples from the MIT Gallery that might be appropriate.