Members often want to know how exactly to deploy mobile/ cellphone credentials in a particular system, and what equipment or phones are needed to support it.
Here's one method. Users are surprised to learn it requires replacing no readers, no access panels, and even works with previously issued cards:
Furthermore, this method overcomes fundamental issues with NFC or BLE based credentials, as it does not require any change in operational management of credentials, special apps on the phone, or battery power on the device.
Granted the 'wallet case' method isn't without risk - inserted cards can be stolen/lost, the case damaged, or user may hate the increase (slight) thickness it requires. Also, cases may not be available for every phone model. But compared to the cost replacing readers at hundreds of dollars per door, replacing a cell phone case is much cheaper ($35 or less).