Solving the 'big finger vs. tiny screen' problem

• Learn how to make custom View controls - check
• Learn to make compound controls - check
• Learn how to paint on the canvas - check
• Design a effective 2D rendering pipeline for undirected graphs- check
• Remember basic planar trigonometry - check
• Design a fuzzy lock-on selection method for the touchscreen - check
• Design a robust backing model - check
• Design an effective UI for the touchscreen - check
• Implement all the nasty details - check