TapLab measures click rate in a timed browser test and stores your best locally; the optional global backend can attach it to a nickname.
Open interactive TapLab ↗TapLab counts accepted clicks during the timed run and divides the total by the active test duration. Browser scheduling, switch bounce behavior and device latency can affect individual runs.
Compare several attempts rather than chasing one outlier. The test is intended for performance tracking, not as a medical or ergonomic assessment.
When the optional backend is configured, a nickname can submit a best CPS result to the shared Top 50 through a server-side RPC with plausibility bounds and rate limiting.