vibrate.
chess clock
controlled prototype
Safe testing only. Use local/off-platform games or games against the computer. Live use against human Lichess opponents is not approved. This prototype reads clock values only—never board positions or moves.
control room
Feel the clock.
Stay in the game.
Pair an Android browser, then safely replay normalized clock pressure with haptics and optional announcements.
controlled fixture / bullet stopped
your clock
00:42
opponent
00:36
Synthetic data is labeled and accepted only after authenticated pairing. Stale or invalid packets stop feedback.
Packet age
No data
Source confidence
—