KeyTestDEVICE DIAGNOSTICS
All tests
Runs locallyNo accountNo install

ONLINE HARDWARE TEST

Touchscreen Test

Trace the display, verify touch coverage and check multiple simultaneous contact points.

MULTI-TOUCH COVERAGE LAB

Find dead zones, gaps and weak edges.

Paint every cell with your fingers while KeyTest tracks gestures, contacts and edge reach.

READY TO TEST
0%coverage

SCREEN MAP

0 of 96 coverage cellsAdaptive 12 × 8 grid · approximately 52px per cell · interpolation enabled
ACTIVE0
MAX TOUCHES0
EDGES0 / 4
TOP RIGHT BOTTOM LEFT
Horizontal swipeSwipe left to right
Vertical swipeSwipe top to bottom
Diagonal swipeCross corner to corner
Multi-touchUse two fingers together
TOUCH SUPPORTChecking…
GESTURES0 / 4
TOUCH EVENTS0
DIRECT / INTERPOLATED0 / 0
PEAK PRESSURE—
LAST CONTACT—

LOCAL DIAGNOSTIC REPORT

Touchscreen Test result

Paint the complete adaptive grid and deliberately reach each physical edge.

Not started
Coverage
0%
Coverage cells reached
0 / 96
Direct / interpolated
0 / 0
Edges reached
0 / 4
Gestures
0 / 4
Maximum contacts
0
Touch events
0

What this result supportsWhich adaptive screen areas and browser pointer/touch gestures received input during this session.

What it cannot proveDigitizer calibration, pressure accuracy, palm rejection, events reserved by the operating system, or whether interpolated path cells received a direct physical touch.

The grid automatically adapts to viewport size and display scaling. Pressure and contact dimensions are browser-reported values and may remain fixed on devices that do not expose those sensors.

ABOUT THIS TEST

Fast answers without installing software.

Trace the display, verify touch coverage and check multiple simultaneous contact points.

Browser limitation: Browser diagnostics provide practical signals but cannot replace physical inspection or professional repair.

Diagnostic input is processed locally for this test and is not uploaded by KeyTest.