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Airffic Lots

Draw

Draw names, shuffle an order, or split into groups, using the browser’s cryptographic random numbers.

What Airffic Lots is

Pick who is on duty, decide the order of presentations, split people into groups. Airffic Lots takes a list of names and three buttons: Draw, Shuffle, and Split. Random numbers come from the browser’s cryptographic generator (crypto.getRandomValues), and out-of-range values are redrawn to avoid bias. Nobody can rig it.

Names are handled entirely on this screen and never sent anywhere. Only results you tap Keep on go into history. Add a line about what the draw was for and you can look it up later.

No registration and no sign-in required. If you keep a result, it is saved to your account when signed in, or to this browser when not.

How to use it

  1. 1List the namesOne per line, or separated by commas.
  2. 2Draw, shuffle, or splitChoose how many to draw and tap Draw. Shuffle gives an order. Choose a number of groups and tap Split.
  3. 3Keep itTap Keep under the result to add it to history, with a line about what it was for.

Questions

Is it really fair?
Random numbers come from the browser’s cryptographic generator (crypto.getRandomValues). Values that would introduce bias when fitting the range are redrawn. Shuffling uses the Fisher-Yates method.
Can I weight the draw so some people are more likely?
No. Everyone has the same probability.
Are the names sent to a server?
No. Only results you tap Keep on are recorded.
Do I need to sign in?
No.

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