diff --git a/hwilib/commands.py b/hwilib/commands.py
index f927bed..08bc81e 100644
--- a/hwilib/commands.py
+++ b/hwilib/commands.py
@@ -14,7 +14,7 @@ import getpass
 from .serializations import PSBT, Base64ToHex, HexToBase64, hash160
 from .base58 import xpub_to_address, xpub_to_pub_hex, get_xpub_fingerprint_as_id, get_xpub_fingerprint_hex
 from os.path import dirname, basename, isfile
-from .hwwclient import NoPasswordError
+from .hwwclient import NoPasswordError, UnavailableActionError, DeviceAlreadyInitError
 
 # Error codes
 NO_DEVICE_PATH = -1
@@ -25,6 +25,8 @@ INVALID_TX = -5
 NO_PASSWORD = -6
 BAD_ARGUMENT = -7
 NOT_IMPLEMENTED = -8
+UNAVAILABLE_ACTION = -9
+DEVICE_ALREADY_INIT = -10
 
 class UnknownDeviceError(Exception):
     def __init__(self,*args,**kwargs):
@@ -196,6 +198,16 @@ def displayaddress(args, client):
         return {'error':'Both `--wpkh` and `--sh_wpkh` can not be selected at the same time.','code':BAD_ARGUMENT}
     return client.display_address(args.path, args.sh_wpkh, args.wpkh)
 
+def setup_device(args, client):
+    try:
+        return client.setup_device(args.label, args.backup_passphrase)
+    except UnavailableActionError as e:
+        return {'error': str(e), 'code': UNAVAILABLE_ACTION}
+    except DeviceAlreadyInitError as e:
+        return {'error': str(e), 'code': DEVICE_ALREADY_INIT}
+    except ValueError as e:
+        return {'error': str(e), 'code': BAD_ARGUMENT}
+
 def process_commands(args):
     parser = argparse.ArgumentParser(description='Access and send commands to a hardware wallet device. Responses are in JSON format')
     parser.add_argument('--device-path', '-d', help='Specify the device path of the device to connect to')
@@ -246,6 +258,11 @@ def process_commands(args):
     displayaddr_parser.add_argument('--wpkh', action='store_true', help='Display the bech32 version of the address associated with this key path')
     displayaddr_parser.set_defaults(func=displayaddress)
 
+    setupdev_parser = subparsers.add_parser('setup', help='Setup a device. Passphrase protection uses the password given by -p')
+    setupdev_parser.add_argument('--label', '-l', help='The name to give to the device', default='')
+    setupdev_parser.add_argument('--backup_passphrase', '-b', help='The passphrase to use for the backup, if applicable', default='')
+    setupdev_parser.set_defaults(func=setup_device)
+
     args = parser.parse_args(args)
 
     device_path = args.device_path
diff --git a/hwilib/devices/coldcard.py b/hwilib/devices/coldcard.py
index ba99fa0..ea1fb04 100644
--- a/hwilib/devices/coldcard.py
+++ b/hwilib/devices/coldcard.py
@@ -101,7 +101,7 @@ class ColdcardClient(HardwareWalletClient):
         raise NotImplementedError('The Coldcard does not currently implement displayaddress')
 
     # Setup a new device
-    def setup_device(self):
+    def setup_device(self, label='', passphrase=''):
         raise NotImplementedError('The Coldcard does not currently implement setup')
 
     # Wipe this device
diff --git a/hwilib/devices/digitalbitbox.py b/hwilib/devices/digitalbitbox.py
index ab36f7b..ca372da 100644
--- a/hwilib/devices/digitalbitbox.py
+++ b/hwilib/devices/digitalbitbox.py
@@ -355,7 +355,7 @@ class DigitalbitboxClient(HardwareWalletClient):
         raise NotImplementedError('The DigitalBitbox does not currently implement displayaddress')
 
     # Setup a new device
-    def setup_device(self):
+    def setup_device(self, label='', passphrase=''):
         raise NotImplementedError('The DigitalBitbox does not currently implement setup')
 
     # Wipe this device
diff --git a/hwilib/devices/keepkey.py b/hwilib/devices/keepkey.py
index 76759d6..ee84da6 100644
--- a/hwilib/devices/keepkey.py
+++ b/hwilib/devices/keepkey.py
@@ -180,7 +180,7 @@ class KeepkeyClient(HardwareWalletClient):
         raise NotImplementedError('The KeepKey does not currently implement displayaddress')
 
     # Setup a new device
-    def setup_device(self):
+    def setup_device(self, label='', passphrase=''):
         raise NotImplementedError('The KeepKey does not currently implement setup')
 
     # Wipe this device
diff --git a/hwilib/devices/ledger.py b/hwilib/devices/ledger.py
index 35bb60b..f406a01 100644
--- a/hwilib/devices/ledger.py
+++ b/hwilib/devices/ledger.py
@@ -248,7 +248,7 @@ class LedgerClient(HardwareWalletClient):
         self.app.getWalletPublicKey(keypath[2:], True, (p2sh_p2wpkh or bech32), bech32)
 
     # Setup a new device
-    def setup_device(self):
+    def setup_device(self, label='', passphrase=''):
         raise NotImplementedError('The Ledger Nano S does not support software setup')
 
     # Wipe this device
diff --git a/hwilib/devices/trezor.py b/hwilib/devices/trezor.py
index 8036ad1..492af23 100644
--- a/hwilib/devices/trezor.py
+++ b/hwilib/devices/trezor.py
@@ -191,7 +191,7 @@ class TrezorClient(HardwareWalletClient):
       )
 
     # Setup a new device
-    def setup_device(self):
+    def setup_device(self, label='', passphrase=''):
         raise NotImplementedError('The Trezor does not currently implement setup')
 
     # Wipe this device
diff --git a/hwilib/hwwclient.py b/hwilib/hwwclient.py
index d93e4d7..bb8dbd2 100644
--- a/hwilib/hwwclient.py
+++ b/hwilib/hwwclient.py
@@ -32,7 +32,7 @@ class HardwareWalletClient(object):
             'implement this method')
 
     # Setup a new device
-    def setup_device(self):
+    def setup_device(self, label='', passphrase=''):
         raise NotImplementedError('The HardwareWalletClient base class does not '
             'implement this method')
 
@@ -49,3 +49,11 @@ class HardwareWalletClient(object):
 class NoPasswordError(Exception):
     def __init__(self,*args,**kwargs):
         Exception.__init__(self,*args,**kwargs)
+
+class UnavailableActionError(Exception):
+    def __init__(self,*args,**kwargs):
+        Exception.__init__(self,*args,**kwargs)
+
+class DeviceAlreadyInitError(Exception):
+    def __init__(self,*args,**kwargs):
+        Exception.__init__(self,*args,**kwargs)