# Test criteria

The following table describes the certification criteria:

| Test type ||
|---|---|
| **Device test** | **Number of devices:** 10 **Test:** Test a variety of Android-powered devices and measure the average tap times. Test each mobile device with two different cards. **Pass criteria:** Twenty taps with at least 80% at 500 ms or less. The pass rate must be at least 95% successful. |
| **Tap success rate test** | **Number of devices:** 4 **Test:** Test the performance and stability of the network on both high-end and low-end devices with the same payment card. The objective is to ensure performance of the network. The pass rate doesn't include failures due to issues like user error. **Pass criteria:** One hundred taps with a 95% pass rate. |
| **Cardholder verification methods (CVM) test** | **Number of devices:** 1 **Test:** Test the device unlock rules to ensure that they're implemented correctly. Tests are based on the time since the last user unlock. A user unlock isn't required for up to 10 low-value transit transactions. **Pass criteria:** Approximately 10 taps for all the types of CVM rules. This is a pass-or-fail test. |

After you complete the tests, use the open loop
[launch test evidence form](https://docs.google.com/forms/d/e/1FAIpQLScCFeFVzkhQ2Wxgam9Wa8J_4MSpBvLnQUtqN-OPqMDb3rpfdQ/viewform?resourcekey=0-JS1CEZP8OdDnhDM11iM1YQ) to attach and send your testing evidence to Google.