Yes. PINs/RFID/Biometrics are stored on the NarcBox and can be used to open the door even if you are out of WiFi range. You can do all NarcBox transactions without WiFi except Manage Inventory. Even if you do a Log Med Use in the field without WiFi, your NarcBox will subtract the meds that were used from your Inventory total. The NarcBox will automatically reconnect to WiFi when it is within range and will transmit all NarcBox events that occurred offline.
There are some events that require active WiFi which can be found under the 'Manage Inventory' button. This includes Transfer In, Transfer Out, or Restock for tagged meds, or Check In, Check Out, Restock/Remove Meds, or Reseal for Pouches.