Coin Flip

This digital coin flip uses the browser's cryptographically secure random number generator — window.crypto.getRandomValues() — to produce a genuinely random result with exactly 50% probability for each outcome. Unlike physical coin flips, which can be influenced by technique, starting position, and air resistance, a cryptographic random function has no such bias. The flip history tracks your last 20 results and shows the running percentage of heads versus tails — useful for demonstrating that even with a fair 50/50 outcome, short sequences frequently show apparent streaks that correct themselves over longer runs.