diff --git a/prototype/src/main/resources/templates/intern/customers/id.html b/prototype/src/main/resources/templates/intern/customers/id.html
index 57263dc..185d59f 100644
--- a/prototype/src/main/resources/templates/intern/customers/id.html
+++ b/prototype/src/main/resources/templates/intern/customers/id.html
@@ -91,7 +91,10 @@
                 <div>
                     <label for="password">Passwort</label>
                     <input class="full-width" type="password" name="password" placeholder="Passwort" id="password"
+                           pattern="(?=.*[0-9])(?=.*[a-z])(?=.*[A-Z]).{8,}"
                            required>
+                    <small>Das Passwort muss mindestens 8 Zeichen enthalten. Es muss aus mindestens einem
+                        Großbuchstaben, einem Kleinbuchstaben und einer Zahl bestehen.</small>
                 </div>
 
                 <div>
diff --git a/prototype/src/main/resources/templates/register.html b/prototype/src/main/resources/templates/register.html
index 010b2cc..613cbfc 100644
--- a/prototype/src/main/resources/templates/register.html
+++ b/prototype/src/main/resources/templates/register.html
@@ -23,7 +23,10 @@
             </div>
             <div>
                <label for="password">Passwort</label>
-               <input class="full-width" type="password" name="password" placeholder="Passwort" id="password" required>
+               <input class="full-width" type="password" name="password" placeholder="Passwort" id="password"
+                      pattern="(?=.*[0-9])(?=.*[a-z])(?=.*[A-Z]).{8,}" required>
+               <small>Das Passwort muss mindestens 8 Zeichen enthalten. Es muss aus mindestens einem Großbuchstaben,
+                  einem Kleinbuchstaben und einer Zahl bestehen.</small>
             </div>
             <div>
                <label for="password2">Passwort wiederholen</label>
diff --git a/prototype/src/main/resources/templates/user/settings.html b/prototype/src/main/resources/templates/user/settings.html
index 3e71125..2050863 100644
--- a/prototype/src/main/resources/templates/user/settings.html
+++ b/prototype/src/main/resources/templates/user/settings.html
@@ -43,7 +43,10 @@
                        required>
 
                 <label for="password1">Neues Passwort</label>
-                <input class="full-width" type="password" name="password1" placeholder="Passwort" id="password1" required>
+                <input class="full-width" type="password" name="password1" placeholder="Passwort" id="password1"
+                       pattern="(?=.*[0-9])(?=.*[a-z])(?=.*[A-Z]).{8,}" required>
+                <small>Das Passwort muss mindestens 8 Zeichen enthalten. Es muss aus mindestens einem Großbuchstaben,
+                    einem Kleinbuchstaben und einer Zahl bestehen.</small>
                 <label for="password2">Neues Passwort wiederholen</label>
                 <input class="full-width" type="password" name="password2" placeholder="Passwort" id="password2"
                        required>