Open the test on the touch screen you want to check.
Put one finger on the test area, then add more fingers one at a time.
Each touch point appears with its own id and coordinates, and the counter records the most at once.
Drag a finger across the whole area to find spots where tracking drops out.
About Multi-Touch Tester
Visualize every touch point your device reports. Touch, click or drag on the pad and each contact gets its own colored dot, id and live coordinates, with counters for current and maximum simultaneous touches.
Built on Pointer Events, it works the same for touchscreens, trackpads and a mouse.
What people use it for
Verify a touchscreen registers multi-touch (two, three or more fingers).
Find dead zones where touches aren't detected.
Check trackpad or stylus tracking and coordinates.
Frequently asked questions
How many fingers can it track?
As many as your hardware and browser report. Lay several down at once and watch the 'max at once' counter.
Does it work with a mouse?
Yes. A mouse counts as one pointer, so you'll see a single dot; multi-touch needs a touchscreen or trackpad.
Is it private?
Every calculation happens on this page, in your own browser. Your input is never sent to a server and never logged, which also means the tool keeps working when you are offline.