Lab
Two small things built to be played rather than read. One measures how fast you react and how well you ignore a distraction. The other hands your webcam to an object detector and asks you to go find things.
Neither talks to a server. The gauntlet keeps your best scores in your own browser, and the hunt processes camera frames on your device and throws them away, so there is nothing to upload and nothing to delete.
Reaction Gauntlet
Four rounds, about thirty seconds: raw reaction, a Stroop test, a visual search, and a digit span. You get scored against a typical range and against your own previous best.
- ReactionClick the moment the panel turns.
- Stroop gapPick the ink colour, not the word.
- Visual searchFind the tilted one.
- Digit spanRepeat the sequence back.
Keyboard works throughout: Space for the reaction round,1 to 4 for the colours.
Guess What I See
A scavenger hunt for your webcam. The page names an object, you go find one, and the detector has to agree before the clock runs out. Same MobileNet-SSD model as the compression research →
Camera preview appears here once you start.
The detector is a few megabytes and downloads when you press start, not on page load.
Detection runs at a higher confidence threshold than the research page uses, because a flickering low-confidence guess would score points you did not earn. A find has to hold across three consecutive frames before it counts.