Is there anyway to have the built in keyboard and login popups larger?
For the keyboard, in the designer you can go to project properties and change the % width of the keyboard.
For the login popup I’m not sure. You could try checking that your display size is not causing the pop up to be scaled down.
By login i mean system.security.lockScreen()
You can build you own, take a look at the cloud template browser, there is a switch user template you could modify.
just call that instead of the built in.