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Sounds like you just want to make a settings menu. Read a few options at start up in your app. Allow the user to change them via the settings app
No, entering 2FA token settings on the watch would be a nightmare. You need to accurately type a string of 32 essentially random alphanumeric characters for each token. That's only practical on a phone/tablet or PC. Even better, a phone/tablet/PC usually has a camera for scanning a QR code representing the token.
If you use .writeJSON you'll be good.
I will look into that.
Sounds like you just want to make a settings menu. Read a few options at start up in your app. Allow the user to change them via the settings app. This is done by creating an app.settings.js bit of code. Have a look at the
Pastel
app which does this.