[FEATURE REQUEST] Improve UI design for passcode screen

[JuancaG05]

The passcode screen is a bit outdated in UI terms, so it would be great to perform a design improvement on it. Some mockups will be created so that we can compare among the current design and several proposals, also trying to align design with iOS.

TASKS

• Research (if needed)
• Create mockups
• Create branch feature/passcode_screen
• Development tasks
  • Constraint layout
  • Implement numeric keyboard
  • Change passcode from Array to String
  • Remove attributes setters
  • Fit keyboard for all screen sizes
• Code review and apply changes requested
• Design test plan
• QA
• Merge branch feature/passcode_screen into master

PR

App: #3582
Library (if needed): Not needed for this issue

[tripplehay]

Sounds like a really good idea to me the passcode screen is outdated in aspect of designing.

[jesmrec]

Some examples of different existing styles:

iOS oC app	nC	Dropbox