Sure, let’s architect a pause‑box with a firmware that shuts down notifications, locks the screen, and runs a 5‑second counter that only increments when you’re not looking at the monitor. Add a pressure‑sensitive lid that triggers a gentle chime and a timer that only allows re‑entry when you’ve met the required breath count. It’ll be a perfect system, but don’t forget to test for edge cases like a sudden power outage or a toddler’s curiosity. Now, how many microcontrollers does that take?