diff --git a/iottb/commands/add_device.py b/iottb/commands/add_device.py
index 35624be..d5c9ff9 100644
--- a/iottb/commands/add_device.py
+++ b/iottb/commands/add_device.py
@@ -6,7 +6,8 @@ import logging
 import re
 
 from iottb import definitions
-from iottb.contexts import DeviceMetadata, IottbConfig
+from iottb.models.device_metadata import DeviceMetadata
+from iottb.models.iottb_config import IottbConfig
 from iottb.definitions import CFG_FILE_PATH
 
 logger = logging.getLogger(__name__)
diff --git a/iottb/commands/initialize_testbed.py b/iottb/commands/initialize_testbed.py
index 56493a6..d7373ea 100644
--- a/iottb/commands/initialize_testbed.py
+++ b/iottb/commands/initialize_testbed.py
@@ -3,7 +3,7 @@ from pathlib import Path
 import logging
 from logging.handlers import RotatingFileHandler
 import sys
-from iottb.contexts import IottbConfig
+from iottb.models.iottb_config import IottbConfig
 from iottb.definitions import DB_NAME
 
 logger = logging.getLogger(__name__)
diff --git a/iottb/commands/sniff.py b/iottb/commands/sniff.py
new file mode 100644
index 0000000..27edbef
--- /dev/null
+++ b/iottb/commands/sniff.py
@@ -0,0 +1,8 @@
+import click
+import logging
+from iottb import definitions
+
+
+
+
+
diff --git a/iottb/main.py b/iottb/main.py
index 4c0efdc..a877752 100644
--- a/iottb/main.py
+++ b/iottb/main.py
@@ -8,7 +8,7 @@ import logging
 #################################################
 from iottb.utils.logger_config import setup_logging
 from iottb import definitions
-from iottb.contexts import IottbConfig
+from iottb.models.iottb_config import IottbConfig
 from iottb.commands.initialize_testbed import init_db
 from iottb.commands.add_device import add_device
 
diff --git a/iottb/models/__init__.py b/iottb/models/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/iottb/models/database.py b/iottb/models/database.py
new file mode 100644
index 0000000..63105f2
--- /dev/null
+++ b/iottb/models/database.py
@@ -0,0 +1,6 @@
+class Database:
+
+    def __init__(self, name, path):
+        self.name = name
+        self.path = path
+        self.device_list = [] # List of the canonical names of devices registered in this database
diff --git a/iottb/models/device_metadata.py b/iottb/models/device_metadata.py
new file mode 100644
index 0000000..505677a
--- /dev/null
+++ b/iottb/models/device_metadata.py
@@ -0,0 +1,44 @@
+import logging
+import uuid
+from datetime import datetime
+import logging
+import click
+
+from iottb.utils.string_processing import make_canonical_name
+
+logger = logging.getLogger(__name__)
+
+
+class DeviceMetadata:
+    def __init__(self, device_name, description="", model="", manufacturer="", firmware_version="", device_type="",
+                 supported_interfaces="", companion_applications="", save_to_file=None):
+        self.device_id = str(uuid.uuid4())
+        self.device_name = device_name
+        cn, aliases = make_canonical_name(device_name)
+        logger.debug(f'cn, aliases = {cn}, {str(aliases)}')
+        self.aliases = aliases
+        self.canonical_name = cn
+        self.date_added = datetime.now().isoformat()
+        self.description = description
+        self.model = model
+        self.manufacturer = manufacturer
+        self.current_firmware_version = firmware_version
+        self.device_type = device_type
+        self.supported_interfaces = supported_interfaces
+        self.companion_applications = companion_applications
+        self.last_metadata_update = datetime.now().isoformat()
+        if save_to_file is not None:
+            click.echo('TODO: Implement saving config to file after creation!')
+
+    def add_alias(self, alias: str = ""):
+        if alias == "":
+            return
+        self.aliases.append(alias)
+
+    def get_canonical_name(self):
+        return self.canonical_name
+
+    def print_attributes(self):
+        print(f'Printing attribute value pairs in {__name__}')
+        for attr, value in self.__dict__.items():
+            print(f'{attr}: {value}')
diff --git a/iottb/contexts.py b/iottb/models/iottb_config.py
similarity index 61%
rename from iottb/contexts.py
rename to iottb/models/iottb_config.py
index 6c50723..1d4418d 100644
--- a/iottb/contexts.py
+++ b/iottb/models/iottb_config.py
@@ -1,20 +1,12 @@
 import json
 from pathlib import Path
-import logging
-import json
-from pathlib import Path
-from datetime import datetime
-import uuid
-import unicodedata
-import re
-
-import click
 
 from iottb import definitions
+import logging
 
 logger = logging.getLogger(__name__)
 
-DB_NAME = 'iottb.db'
+DB_NAME = definitions.DB_NAME
 
 
 class IottbConfig:
@@ -130,77 +122,3 @@ class IottbConfig:
 
     def get_full_default_path(self):
         return Path(self.default_db_location) / self.default_database
-
-
-class Database:
-
-    def __init__(self, name, path):
-        self.name = name
-        self.path = path
-        self.device_list = [] # List of the canonical names of devices registered in this database
-
-
-class DeviceMetadata:
-    def __init__(self, device_name, description="", model="", manufacturer="", firmware_version="", device_type="",
-                 supported_interfaces="", companion_applications="", save_to_file=None):
-        self.device_id = str(uuid.uuid4())
-        self.device_name = device_name
-        cn, aliases = make_canonical_name(device_name)
-        logger.debug(f'cn, aliases = {cn}, {str(aliases)}')
-        self.aliases = aliases
-        self.canonical_name = cn
-        self.date_added = datetime.now().isoformat()
-        self.description = description
-        self.model = model
-        self.manufacturer = manufacturer
-        self.current_firmware_version = firmware_version
-        self.device_type = device_type
-        self.supported_interfaces = supported_interfaces
-        self.companion_applications = companion_applications
-        self.last_metadata_update = datetime.now().isoformat()
-        if save_to_file is not None:
-            click.echo('TODO: Implement saving config to file after creation!')
-
-    def add_alias(self, alias: str = ""):
-        if alias == "":
-            return
-        self.aliases.append(alias)
-
-    def get_canonical_name(self):
-        return self.canonical_name
-
-    def print_attributes(self):
-        print(f'Printing attribute value pairs in {__name__}')
-        for attr, value in self.__dict__.items():
-            print(f'{attr}: {value}')
-
-
-def make_canonical_name(name):
-    """
-    Normalize the device name to a canonical form:
-    - Replace the first two occurrences of spaces and transform characters with dashes.
-    - Remove any remaining spaces and non-ASCII characters.
-    - Convert to lowercase.
-    """
-    aliases = [name]
-    logger.info(f'Normalizing name {name}')
-
-    # We first normalize
-    chars_to_replace = definitions.REPLACEMENT_SET_CANONICAL_DEVICE_NAMES
-    pattern = re.compile('|'.join(re.escape(char) for char in chars_to_replace))
-    norm_name = pattern.sub('-', name)
-    norm_name = re.sub(r'[^\x00-\x7F]+', '', norm_name) # removes non ascii chars
-
-    aliases.append(norm_name)
-    # Lower case
-    norm_name = norm_name.lower()
-    aliases.append(norm_name)
-
-    # canonical name is only first two parts of resulting string
-    parts = norm_name.split('-')
-    canonical_name = canonical_name = '-'.join(parts[:2])
-    aliases.append(canonical_name)
-
-    logger.debug(f'Canonical name: {canonical_name}')
-    logger.debug(f'Aliases: {aliases}')
-    return canonical_name, list(set(aliases))
diff --git a/iottb/utils/logger_config.py b/iottb/utils/logger_config.py
index 8282b12..1ececee 100644
--- a/iottb/utils/logger_config.py
+++ b/iottb/utils/logger_config.py
@@ -4,7 +4,7 @@ from pathlib import Path
 import logging
 from logging.handlers import RotatingFileHandler
 import sys
-from iottb.contexts import IottbConfig
+from iottb.models.iottb_config import IottbConfig
 from iottb import definitions
 from iottb.definitions import MAX_VERBOSITY, CONSOLE_LOG_FORMATS, APP_NAME, LOGFILE_LOG_FORMAT
 
diff --git a/iottb/utils/string_processing.py b/iottb/utils/string_processing.py
index a18d095..321e842 100644
--- a/iottb/utils/string_processing.py
+++ b/iottb/utils/string_processing.py
@@ -1,6 +1,40 @@
 import re
 from iottb import definitions
+import logging
+
+logger = logging.getLogger(__name__)
 
 
 def normalize_string(s, chars_to_replace=None, replacement=None, allow_unicode=False):
     pass
+
+
+def make_canonical_name(name):
+    """
+    Normalize the device name to a canonical form:
+    - Replace the first two occurrences of spaces and transform characters with dashes.
+    - Remove any remaining spaces and non-ASCII characters.
+    - Convert to lowercase.
+    """
+    aliases = [name]
+    logger.info(f'Normalizing name {name}')
+
+    # We first normalize
+    chars_to_replace = definitions.REPLACEMENT_SET_CANONICAL_DEVICE_NAMES
+    pattern = re.compile('|'.join(re.escape(char) for char in chars_to_replace))
+    norm_name = pattern.sub('-', name)
+    norm_name = re.sub(r'[^\x00-\x7F]+', '', norm_name) # removes non ascii chars
+
+    aliases.append(norm_name)
+    # Lower case
+    norm_name = norm_name.lower()
+    aliases.append(norm_name)
+
+    # canonical name is only first two parts of resulting string
+    parts = norm_name.split('-')
+    canonical_name = canonical_name = '-'.join(parts[:2])
+    aliases.append(canonical_name)
+
+    logger.debug(f'Canonical name: {canonical_name}')
+    logger.debug(f'Aliases: {aliases}')
+    return canonical_name, list(set(aliases))
diff --git a/tests/test_make_canonical_name.py b/tests/test_make_canonical_name.py
index 5662a6a..eac541c 100644
--- a/tests/test_make_canonical_name.py
+++ b/tests/test_make_canonical_name.py
@@ -1,4 +1,4 @@
-from iottb.contexts import make_canonical_name
+from iottb.utils.string_processing import make_canonical_name
 
 import pytest