Ballot box buddy
Drop a paper. Get a thumbs-up.
Keep the phone still. Aim the dashed box at the ballot slot.
Camera off. Video stays on this device.
Adjust detection
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Hands and shadows may trigger it too. After a reaction, let the slot stay still before the next paper.
For fun, not a vote counter. No video uploads or recordings. Keep this page open and the screen awake. On a phone, open it as a top-level HTTPS page in Safari or Chrome, not a file preview.