Windows Touch Z Axis Allowance Test

This test verifies that a Windows® Touch device does not exceed the maximum z-axis allowance (0.5 millimeters) for touch detection.

Test details

Associated requirements


See the device hardware requirements.


Windows RT (ARM-based) Windows 8 (x64) Windows 8 (x86) Windows RT 8.1 Windows 8.1 x64 Windows 8.1 x86

Expected run time

~2 minutes


Certification Functional



Running the test

Before you run the test, complete the test setup as described in the test requirements: Windows Touch Testing Prerequisites.

This requirement minimizes accidental touches. In typing situations in particular, the user's fingers hover very close to the surface of the screen.

To complete this test, hold a contact at the defined distance for the stated specified duration.


See How to Use the Precision Touch Testing Tool to learn about how Microsoft performs this test in the Windows Touch Device Certification Processes and Windows Touch Test Lab (WTTL) Service.


For troubleshooting information, see Troubleshooting Device.Digitizer Testing and How to run the Windows HCK Tests for Touch and Pen Devices.

More information

Command syntax

Command option Description

Logo3.exe -config ZAxisAllowance.json

Runs the test.

File list

File Location





How to run the Windows HCK Tests for Touch and Pen Devices

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