diff --git a/webservice/api.py b/webservice/api.py
new file mode 100644
index 0000000..ac29160
--- /dev/null
+++ b/webservice/api.py
@@ -0,0 +1,55 @@
+import os
+
+from flask import Blueprint, jsonify, request
+
+from db import db
+from helper_functions import check_password, hash_password
+from models import User
+
+api = Blueprint('api', __name__, url_prefix='/api/v1/resources/devices')
+__location__ = os.path.realpath(os.path.join(os.getcwd(), os.path.dirname(__file__)))
+
+
+@api.route('/api/users', methods=['GET'])
+def users():
+    res = []
+    for i in User.query.all():
+        res.append(i.as_dict())
+
+    return jsonify(res)
+
+
+@api.route('/api/login', methods=['POST'])
+def login():
+    request_data = request.get_json()
+    username = request_data['username']
+    password = request_data['password']
+
+    user = User.filter_by(username=username).first()
+    if check_password(user.password, password):
+        return True  # TODO Return token
+    else:
+        return False
+
+
+@api.route('/api/logout', methods=['GET'])
+def logout():
+    # TODO
+    pass
+
+
+@api.route('/api/register', methods=['POST'])
+def register():
+    request_data = request.get_json()
+    username = request_data['username']
+    password = request_data['password']
+
+    user = User(
+        username=username,
+        password=hash_password(password),
+        admin=False
+    )
+    db.session.add(user)
+    db.session.commit()
+
+    pass
diff --git a/webservice/app.py b/webservice/app.py
index 6bfb3ee..986853a 100644
--- a/webservice/app.py
+++ b/webservice/app.py
@@ -1,7 +1,9 @@
-from flask import Flask, jsonify
+from flask import Flask
 from dotenv import load_dotenv
 
 from models import *
+from api import api
+from interface import interface
 
 
 def create_app():
@@ -18,17 +20,8 @@ def create_app():
     # Create all tables
     db.create_all()
 
-    @application.route('/')
-    def hello_world():
-        return 'Hello World!'
-
-    @application.route('/users')
-    def users():
-        res = []
-        for i in User.query.all():
-            res.append(i.as_dict())
-
-        return jsonify(res)
+    application.register_blueprint(api)
+    application.register_blueprint(interface)
 
     return application
 
diff --git a/webservice/helper_functions.py b/webservice/helper_functions.py
new file mode 100644
index 0000000..8c9c1b3
--- /dev/null
+++ b/webservice/helper_functions.py
@@ -0,0 +1,12 @@
+import hashlib
+import uuid
+
+
+def hash_password(password):
+    salt = uuid.uuid4().hex
+    return hashlib.sha256(salt.encode() + password.encode()).hexdigest() + ':' + salt
+
+
+def check_password(hashed_password, user_password):
+    password, salt = hashed_password.split(':')
+    return password == hashlib.sha256(salt.encode() + user_password.encode()).hexdigest()
\ No newline at end of file
diff --git a/webservice/interface.py b/webservice/interface.py
new file mode 100644
index 0000000..7541934
--- /dev/null
+++ b/webservice/interface.py
@@ -0,0 +1,12 @@
+import os
+
+from flask import Blueprint
+
+interface = Blueprint('interface', __name__, url_prefix='/api/v1/resources/devices')
+__location__ = os.path.realpath(os.path.join(os.getcwd(), os.path.dirname(__file__)))
+
+
+# Return all tags
+@interface.route('/', methods=['GET'])
+def get_tags():
+    return "Konfiguration"