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Note that there is a function called Guest Pass which can be issued one-off to allow guests access to a reader through their mobile device. The user is sent a web link to click on their device via the browser running on the smartphone (this assumes access to the internet) that allows them to use a reader to unlock an entrance by sending a command over the internet.
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In some circumstances, the Android version of the Avigilon Alta mobile app can use NFC on Android devices as an additional authentication method. However, you need to confirm that the version of the mobile app you are running is one that does support NFC and that the phone supports NFC to be able to take advantage of this authentication method. At this time, NFC is not yet supported on Apple devices.
Restrictions and permissions on the phone
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