Is a Spinning Wheel Really Random?

How browser randomness works and what TossUp does to make a wheel selection unpredictable.

A spinning animation is only the presentation. The important part is how the winning index is selected. TossUp uses the browser's crypto-capable random source where available and then animates the wheel toward the selected result.

Before you start

A spinning animation is only the presentation. The important part is how the winning index is selected. TossUp uses the browser's crypto-capable random source where available and then animates the wheel toward the selected result. How browser randomness works and what TossUp does to make a wheel selection unpredictable. A useful rule of thumb is to keep instructions short, give everyone a clear turn, and stop or change the activity when the group is no longer enjoying it.

For a random version, prepare the acceptable options in advance and use the TossUp tools to make the selection visible.

A simple approach

A spinning animation is only the presentation. The important part is how the winning index is selected. TossUp uses the browser's crypto-capable random source where available and then animates the wheel toward the selected result. How browser randomness works and what TossUp does to make a wheel selection unpredictable. A useful rule of thumb is to keep instructions short, give everyone a clear turn, and stop or change the activity when the group is no longer enjoying it.

For a random version, prepare the acceptable options in advance and use the TossUp tools to make the selection visible.

Keep the activity moving

A spinning animation is only the presentation. The important part is how the winning index is selected. TossUp uses the browser's crypto-capable random source where available and then animates the wheel toward the selected result. How browser randomness works and what TossUp does to make a wheel selection unpredictable. A useful rule of thumb is to keep instructions short, give everyone a clear turn, and stop or change the activity when the group is no longer enjoying it.

For a random version, prepare the acceptable options in advance and use the TossUp tools to make the selection visible.

Make it work for your group

A spinning animation is only the presentation. The important part is how the winning index is selected. TossUp uses the browser's crypto-capable random source where available and then animates the wheel toward the selected result. How browser randomness works and what TossUp does to make a wheel selection unpredictable. A useful rule of thumb is to keep instructions short, give everyone a clear turn, and stop or change the activity when the group is no longer enjoying it.

For a random version, prepare the acceptable options in advance and use the TossUp tools to make the selection visible.

Frequently asked questions