diff --git a/labadoor-acl/src/lib.rs b/labadoor-acl/src/lib.rs
index 36af390..32b5854 100644
--- a/labadoor-acl/src/lib.rs
+++ b/labadoor-acl/src/lib.rs
@@ -37,50 +37,56 @@ impl PartialEq for ResourceShortcuts {
 pub trait ACL {
     /// `Option`s on delete operations mean that all associated data is removed
     /// ACLEntry
-    fn allow_access(user: String, resource: String);
-    fn deny_access(user: Option<String>, resource: Option<String>);
+    fn allow_access(&self, user: String, resource: String);
+    fn deny_access(&self, user: Option<String>, resource: Option<String>);
 
     /// AuthMethod
-    fn add_auth_method(user: String, method: String, identifier: String);
-    fn del_auth_method(user: Option<String>, method: Option<String>, identifier: Option<String>);
+    fn add_auth_method(&self, user: String, method: String, identifier: String);
+    fn del_auth_method(
+        &self,
+        user: Option<String>,
+        method: Option<String>,
+        identifier: Option<String>,
+    );
 
     /// ResourceShortcuts
-    fn add_shortcut(user: String, resource: String, shortcut: i8);
-    fn del_shortcut(user: Option<String>, resource: Option<String>, shortcut: Option<i8>);
+    fn add_shortcut(&self, user: String, resource: String, shortcut: i8);
+    fn del_shortcut(&self, user: Option<String>, resource: Option<String>, shortcut: Option<i8>);
 
     /// Queries
-    fn get_username(method: String, identifier: String) -> Result<String, ()>;
-    fn get_resource(username: String, shortcut: i8) -> Result<String, ()>;
-    fn is_allowed(username: String, resource: String) -> Result<(), ()>;
+    fn get_username(&self, method: String, identifier: String) -> Result<String, ()>;
+    fn get_resource(&self, username: String, shortcut: i8) -> Result<String, ()>;
+    fn is_allowed(&self, username: String, resource: String) -> Result<(), ()>;
 
-    fn del_user(user: String) {
-        Self::deny_access(Some(user.clone()), None);
-        Self::del_auth_method(Some(user.clone()), None, None);
-        Self::del_shortcut(Some(user), None, None);
+    fn del_user(&self, user: String) {
+        self.deny_access(Some(user.clone()), None);
+        self.del_auth_method(Some(user.clone()), None, None);
+        self.del_shortcut(Some(user), None, None);
     }
 
-    fn del_resource(resource: String) {
-        Self::deny_access(None, Some(resource.clone()));
-        Self::del_shortcut(None, Some(resource), None);
+    fn del_resource(&self, resource: String) {
+        self.deny_access(None, Some(resource.clone()));
+        self.del_shortcut(None, Some(resource), None);
     }
 
     fn create_user(
+        &self,
         username: String,
         resource: String,
         method: String,
         identifier: String,
         shortcut: i8,
     ) {
-        Self::allow_access(username.clone(), resource.clone());
-        Self::add_auth_method(username.clone(), method.clone(), identifier.clone());
-        Self::add_shortcut(username, resource, shortcut);
+        self.allow_access(username.clone(), resource.clone());
+        self.add_auth_method(username.clone(), method.clone(), identifier.clone());
+        self.add_shortcut(username, resource, shortcut);
     }
 
-    fn auth_user(method: String, identifier: String, shortcut: i8) {
-        if let Ok(username) = Self::get_username(method, identifier) {
-            if let Ok(resource) = Self::get_resource(username.clone(), shortcut) {
-                if Self::is_allowed(username, resource).is_ok() {
-                    println!("Open Sesame!");
+    fn auth_user(&self, method: String, identifier: String, shortcut: i8) {
+        if let Ok(username) = self.get_username(method, identifier) {
+            if let Ok(resource) = self.get_resource(username.clone(), shortcut) {
+                if self.is_allowed(username.clone(), resource).is_ok() {
+                    println!("Open Sesame! {}", username);
                 }
             }
         }