diff --git a/.gitignore b/.gitignore
index e075d71..8ddde79 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 __pycache__/
 db.json
+namensliste.csv
 *.egg-info
diff --git a/config.ini b/config.ini
index aa4a5ec..ebec123 100644
--- a/config.ini
+++ b/config.ini
@@ -1,4 +1,10 @@
 [global]
+
 # Persistent file for storage of times, in .json format.
 # Remove or leave empty for temporary (/tmp/ftracker-db.json) storage
 db_file = db.json
+
+# List of people to be allowed, in .csv format (comma, no delimiters)
+# Col1: First Name(s), Col2: Last Name(s), Col3 (optional): EMail
+# Remove or leave empty for no check
+name_file = namensliste.csv
diff --git a/ftracker/config.py b/ftracker/config.py
index aa4099e..fc88dc6 100644
--- a/ftracker/config.py
+++ b/ftracker/config.py
@@ -1,20 +1,31 @@
 import sys, os
 from configparser import ConfigParser
 
-def findConfigFile():
-	if len(sys.argv) > 1:
-		return sys.argv[1]
-	elif os.path.isfile('config.ini'):
-		return 'config.ini'
-	elif os.path.isfile('/etc/ftracker/config.ini'):
-		return '/etc/ftracker/config.ini'
-	else:
-		return None
+class Config:
 
-configfile = findConfigFile()
+	def __init__(self):
 
-if configfile:
-	config = ConfigParser()
-	config.read(configfile)
-else:
-	config = None
+		def findConfigFile():
+			if len(sys.argv) > 1:
+				return sys.argv[1]
+			elif os.path.isfile('config.ini'):
+				return 'config.ini'
+			elif os.path.isfile('/etc/ftracker/config.ini'):
+				return '/etc/ftracker/config.ini'
+			else:
+				return None
+
+		configfile = findConfigFile()
+
+		if configfile:
+			self.config = ConfigParser()
+			self.config.read(configfile)
+		else:
+			raise Exception("No config file found")
+
+		if not 'global' in self.config:
+			raise Exception("No 'global' section found in config file")
+
+
+	def __getitem__(self, key):
+		return self.config['global'].get(key)
diff --git a/ftracker/core.py b/ftracker/core.py
index 960de83..a89df6b 100644
--- a/ftracker/core.py
+++ b/ftracker/core.py
@@ -2,16 +2,18 @@ import json
 from datetime import datetime
 from slugify import slugify
 
-from .config import config
-if not config:
-	print('No configuration file found.')
-	exit()
+from .config import Config
+config = Config()
 
 
 from tinydb import TinyDB
-dbfile = config['global'].get('db_file') or '/tmp/ftracker-db.json'
+dbfile = config['db_file'] or '/tmp/ftracker-db.json'
 db = TinyDB(dbfile, indent=4)
-# TODO: Load name list if needed
+
+
+from .namelist import NameList
+namefile = config['name_file'] or None
+namelist = NameList(namefile)
 
 
 from flask import Flask, request
@@ -37,10 +39,11 @@ def post_time():
 	if not data['agreetoguidelines']:
 		return "Error: Didn't agree to guidelines.", 406
 
-
-
 	name = slugify(data['name'])
 
+	if not name in namelist:
+		return "Error: Name not in permitted list.", 401
+
 	now = datetime.utcnow()
 	db.insert({
 		'name': name,
diff --git a/ftracker/namelist.py b/ftracker/namelist.py
new file mode 100644
index 0000000..5691338
--- /dev/null
+++ b/ftracker/namelist.py
@@ -0,0 +1,40 @@
+import csv
+from slugify import slugify
+
+class NameList:
+
+	def __init__(self, namefile):
+
+		print('(Re)loading name list')
+
+		if not namefile:
+			self.names = None
+			return
+
+		self.namefile = namefile
+		self.names = {}
+
+		with open(namefile) as f:
+
+			reader = csv.reader(f)
+			for line in reader:
+
+				name = f"{line[0]} {line[1]}"
+				slug = slugify(name)
+				email = line[2] if len(line) > 2 else None
+
+				self.names[slug] = {'email': email}
+
+	def __contains__(self, val):
+		# Don't check if there's no list
+		if self.names == None:
+			return true;
+
+		contained = val in self.names
+
+		# Reload name list if name is unknown and recheck
+		if not contained:
+			self.__init__(self.namefile)
+			contained = val in self.names
+
+		return contained