1## 10.2\. CTS Verifier 2 3Device implementations MUST correctly execute all applicable cases in the CTS 4Verifier. The CTS Verifier is included with the Compatibility Test Suite, and 5is intended to be run by a human operator to test functionality that cannot be 6tested by an automated system, such as correct functioning of a camera and 7sensors. 8 9The CTS Verifier has tests for many kinds of hardware, including some hardware 10that is optional. Device implementations MUST pass all tests for hardware that 11they possess; for instance, if a device possesses an accelerometer, it MUST 12correctly execute the Accelerometer test case in the CTS Verifier. Test cases 13for features noted as optional by this Compatibility Definition Document MAY be 14skipped or omitted. 15 16Every device and every build MUST correctly run the CTS Verifier, as noted 17above. However, since many builds are very similar, device implementers are not 18expected to explicitly run the CTS Verifier on builds that differ only in 19trivial ways. Specifically, device implementations that differ from an 20implementation that has passed the CTS Verifier only by the set of included 21locales, branding, etc. MAY omit the CTS Verifier test. 22 23